What are Barrier Blocks ?
Barrier Blocks are specialized terminal blocks designed to provide electrical isolation between circuits while allowing for secure connections. They are commonly used in applications such as production electronics assembly and maintenance. Important specifications for selection include Current Rating (Amps), which ensures the block can handle the required load; Number of Circuits, which determines how many connections can be made; and Barrier Type, which affects the level of isolation provided. It is crucial for procurement teams to validate lifecycle status and consider alternate-source options to mitigate sourcing risks.
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| Part & Mfr | Total Stock | Pricing & RFQ | Barrier Type | Bottom Termination | Color | Current Rating | Current Rating (Amps) | Features | Insulation Material | Lead Spacing | Lead Style | Maximum Watts Per Terminal | Mounting Type | Number of Circuits | Number of Rows | Number of Wire Entries | Operating Temperature Range | Pitch | Screw Size | Storage Temperature | Terminal Block Type | Termination Style | Top Termination | Voltage Rating | Wire Gauge | |
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TE Connectivity
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23,002
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Price on request
23,002
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3 Wall (Tri) | PC Pin | Black | - | 20A | - | - | - | - | - | - | 5 | 1 | 5 | - | 0.325" (8.26mm) | - | - | Barrier Block | - | Screws with Captive Plate | 150V | 12-22 AWG | |
TE Connectivity
<p>The TE Connectivity 2-1437653-8 is a barrier block terminal strip with 9 circuits and a pitch of 0.375" (9.53mm). It is rated for 25A continuous current and 300V maximum voltage. The wire gauge range is 12 to 22 AWG, making it suitable for medium-power wiring applications.</p><p> </p><p>This barrier block features a 3-wall (tri) barrier design for enhanced isolation between circuits. The top termination uses screws, while the bottom termination is via PC pins for through-hole mounting to a printed circuit board. The board has a single row of 9 wire entries.</p><p> </p><p>All components are housed in a black insulator. The mounting type is through hole, and the block is RoHS3 compliant and REACH unaffected (both unverified). Moisture sensitivity level is MSL 1 (unlimited).</p><p> </p><p>Typical applications include power distribution, control panels, industrial equipment, and other electrical systems requiring reliable, high-current connections in a compact form factor.</p>
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3,040
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Price on request
3,040
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3 Wall (Tri) | PC Pin | Black | 25A | 25A | - | - | 9.53 mm | Pc Pin | - | Through Hole | 9 | 1 | 9 | - | 9.53mm (0.375") | - | - | Barrier Block | PC Pin | Screws | 300V | 12-22 AWG | |
Eaton - Electronics Division
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3,000
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Price on request
3,000
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2 Wall (Dual) | Solder Turret | Black | - | 35A | Flange | - | - | - | - | - | 10 | 1 | 10 | - | 0.562" (14.27mm) | - | - | Barrier Block | - | Screws with Captive Plate | 600V | 10-16 AWG | |
Molex
<p>The Molex 0391001803 is a 3-circuit Eurostyle terminal strip barrier block designed for reliable wire connections in power distribution and control applications. With a 8.00mm (0.315") pitch and 2 rows, it provides 6 wire entries.</p><p> </p><p>Rated for 600V and 20A, this barrier block accepts wire gauges from 12 to 22 AWG. The top termination uses screws for secure connections, while the closed bottom termination prevents accidental contact. The enclosed barrier type adds protection.</p><p> </p><p>The white housing is suitable for chassis or panel mounting. Common applications include industrial control panels, power supplies, and appliance wiring where compact, high-density terminal blocks are required.</p><p> </p><p>This part is RoHS3 compliant, REACH unaffected, and has an MSL of 1 (unlimited). It is manufactured by Molex, a leading interconnect company.</p>
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782
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Price on request
782
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Enclosed | Closed | White | 20A | 20A | - | - | 8.0 mm | Screw | - | Chassis, Panel | 3 | 2 | 6 | - | 8.00mm (0.315") | - | -40°C ~ 105°C | Eurostyle Terminal Strip | - | Screws | 600V | 12-22 AWG | |
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TE Connectivity
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400
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Price on request
400
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3 Wall (Tri) | Solder Turret | Black | - | 25A | Flange | - | - | - | - | - | 3 | 1 | 3 | - | 0.375" (9.53mm) | - | - | Barrier Block | - | Screws with Captive Plate | 300V | 18-22 AWG | |
TE Connectivity
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380
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Price on request
380
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3 Wall (Tri) | PC Pin | Black | - | 25A | - | - | - | - | - | - | 7 | 1 | 7 | - | 0.375" (9.53mm) | - | - | Barrier Block | - | Screws | 300V | 12-22 AWG | |
Cinch
<p>The Cinch 2-140 is a Series 140 barrier block designed for reliable wire termination in industrial and power distribution applications. It features 2 circuits arranged in a double row configuration with a 0.375" (9.53mm) pitch. The block uses 5-40 x 3/16" combination screws for top termination and has a closed bottom design.</p><p> </p><p>Electrical ratings include 15A current and 250V voltage, with maximum power dissipation of 3750W per terminal. The insulation is molded from black phenolic material rated UL 94V-1, and the operating temperature range spans -55°F to +300°F. The block accepts wire sizes up to 16 AWG.</p><p> </p><p>Mechanical features include a flange for chassis or panel mounting. The open bottom design facilitates through-panel wiring. The screw terminals are steel with nickel plating, and solder terminals are brass with electro-tin plating.</p><p> </p><p>This barrier block is suitable for use in control panels, power supplies, and other equipment requiring secure, high-current connections. The double wall barriers provide additional protection against short circuits between adjacent terminals.</p>
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346
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Price on request
346
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2 Wall (Dual) | Closed | Black | 15A | 15A | Flange | Phenolic, UL 94V-1 | - | Screw | 3750W | Chassis, Panel | 2 | 2 | 4 | -55°F to +300°F | 9.53mm (0.375") | 5-40 x 3/16" | - | Barrier Block | - | Screws | 250V | 16 AWG | |
TE Connectivity
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269
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Price on request
269
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3 Wall (Tri) | PC Pin | Black | - | 20A | - | - | - | - | - | - | 3 | 1 | 3 | - | 0.325" (8.26mm) | - | - | Barrier Block | - | Screws with Captive Plate | 150V | 14-22 AWG | |
TE Connectivity
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200
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Price on request
200
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3 Wall (Tri) | PC Pin | Black | - | 25A | - | - | - | - | - | - | 3 | 1 | 3 | - | 0.375" (9.53mm) | - | - | Barrier Block | - | Screws with Captive Plate | 300V | 12-22 AWG | |
TE Connectivity
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160
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Price on request
160
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3 Wall (Tri) | PC Pin | Black | - | 30A | - | - | - | - | - | - | 2 | 1 | 2 | - | 0.438" (11.12mm) | - | - | Barrier Block | - | Screws with Captive Plate | 600V | 10-18 AWG | |
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Eaton - Electronics Division
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88
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Price on request
88
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2 Wall (Dual) | Wire Wrap | Black | - | 30A | Flange | - | - | - | - | - | 5 | 1 | 5 | - | 0.375" (9.53mm) | - | - | Barrier Block | - | - | 300V | 12-22 AWG | |
TE Connectivity
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72
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Price on request
72
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2 Wall (Dual) | PC Pin | Black | - | 20A | - | - | - | - | - | - | 9 | 1 | 9 | - | 0.325" (8.26mm) | - | - | Barrier Block | - | Screws with Captive Plate | 150V | 12-22 AWG | |
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TE Connectivity
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62
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Price on request
62
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2 Wall (Dual) | Closed | Black | - | 50A | - | - | - | - | - | - | 4 | 2 | 8 | - | 0.630" (16.00mm) | - | - | Barrier Block | - | Screws | 600V | 8-18 AWG | |
TE Connectivity
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60
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Price on request
60
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2 Wall (Dual) | PC Pin | Black | - | 20A | - | - | - | - | - | - | 5 | 1 | 5 | - | 0.325" (8.26mm) | - | - | Barrier Block | - | Screws with Captive Plate | 150V | 12-22 AWG | |
TE Connectivity
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60
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Price on request
60
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3 Wall (Tri) | PC Pin | Black | - | 25A | Positions Stamped | - | - | - | - | - | 8 | 1 | 8 | - | 0.375" (9.53mm) | - | - | Barrier Block | - | Screws | 300V | 12-22 AWG | |
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Eaton - Electronics Division
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50
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Price on request
50
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2 Wall (Dual) | Closed | Black | - | 30A | Flange | - | - | - | - | - | 7 | 2 | 14 | - | 0.437" (11.10mm) | - | - | Barrier Block | - | Screws | 300V | 12-22 AWG | |
Altech Corporation
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50
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Price on request
50
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Enclosed | Closed | White | - | 20A | - | - | - | - | - | - | 3 | 2 | 6 | - | 0.315" (8.00mm) | - | - | Eurostyle Terminal Strip | - | Screws | 300V | 12-24 AWG | |
Cinch
<p>The Cinch 12-142 is a 12-circuit barrier block designed for reliable power distribution and interconnection. It is rated for 30A at 250V and accepts 10 AWG wire. The block features a 14.30mm (0.563") pitch and uses screw top termination with a closed bottom. The dual-wall barrier design provides increased isolation between circuits. The block is black and includes a flange for secure chassis or panel mounting.</p>
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41
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Price on request
41
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2 Wall (Dual) | Closed | Black | - | 30A | Flange | - | 14.3 mm | Screw | - | Chassis, Panel | 12 | 2 | 24 | - | 14.30mm (0.563") | - | -48.3°C ~ 148.9°C | Barrier Block | Screw | Screws | 250V | 10 AWG | |
Phoenix Contact
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30
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Price on request
30
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Enclosed | Closed | Black | - | 32A | - | - | - | - | - | - | 12 | 2 | 24 | - | - | - | - | Eurostyle Terminal Strip | - | Screws | 450V | 12-20 AWG | |
Molex
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23
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Price on request
23
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- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
TE Connectivity
<p>The 2-1437382-6 from TE Connectivity is a barrier block terminal block designed for reliable interconnection in electronic systems. This component complies with RoHS3 standards, ensuring environmental safety, and carries a Moisture Sensitivity Level (MSL) of 1 (Unlimited), indicating no special moisture handling requirements. Additionally, it is REACH unaffected, meeting European chemical regulation standards. As a barrier block, it provides a secure and organized method for terminating wires in control panels, industrial equipment, and other applications requiring robust connectivity.</p>
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20
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Price on request
20
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- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
Weidmüller
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20
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Price on request
20
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Enclosed | Closed | Yellow | - | 20A | - | - | - | - | - | - | 12 | 2 | 24 | - | - | - | - | Barrier Block | - | Screws | 300V | 12-22 AWG | |
Idec
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20
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Price on request
20
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2 Wall (Dual) | Closed | Black | - | 15A | - | - | - | - | - | - | 3 | 3 | 6 | - | 0.311" (7.90mm) | - | - | Barrier Block | - | Screws | 300V | 14-22 AWG | |
Weidmüller
<p>The Weidmüller 0274420000 (MK 3/8) is a single- and multi-pole barrier terminal strip designed for direct mounting. It features 8 circuits with 16 wire entries arranged in 2 rows. The terminal block utilizes screw connections for top termination and has a closed bottom termination. The barrier type is enclosed, providing isolation between circuits.</p><p> </p><p>Rated for 20 A and 300 V, the barrier block accepts wire sizes from 12 to 22 AWG (2.5 mm² cross section). It is finished in medium yellow color. The standard package contains 25 pieces.</p><p> </p><p>This barrier block is suitable for power distribution and control applications where reliable screw termination is required. The direct mounting design simplifies installation in panels or enclosures.</p>
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18
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Price on request
18
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Enclosed | Closed | Yellow | 20 A | 20A | - | - | 2.5 mm | Screw Connection | - | Direct mounting | 8 | 2 | 16 | - | - | - | -25°C ~ 55°C | Barrier Block | - | Screws | 300 V | 12-22 AWG | |
TE Connectivity
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16
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Price on request
16
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2 Wall (Dual) | PC Pin | Black | - | 20A | - | - | - | - | - | - | 4 | 1 | 4 | - | 0.325" (8.26mm) | - | - | Barrier Block | - | Screws with Captive Plate | 150V | 12-22 AWG | |
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Eaton - Electronics Division
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11
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Price on request
11
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2 Wall (Dual) | Threaded, Insulated | Black | - | 50A | Flange | - | - | - | - | - | 4 | 1 | 4 | - | 0.562" (14.27mm) | - | - | Barrier Block | - | Screws with Captive Plate | 150V | 8-16 AWG | |
TE Connectivity
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10
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Price on request
10
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3 Wall (Tri) | PC Pin | Black | - | 25A | - | - | - | - | - | - | 3 | 1 | 3 | - | 0.375" (9.53mm) | - | - | Barrier Block | - | Screws | 300V | 12-22 AWG | |
TE Connectivity
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10
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Price on request
10
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3 Wall (Tri) | PC Pin | Black | - | 10A | - | - | - | - | - | - | 6 | 1 | 6 | - | 0.250" (6.35mm) | - | - | Barrier Block | - | Screws with Captive Plate | 300V | 18-22 AWG | |
Weidmüller
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5
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Price on request
5
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Enclosed | Closed | Yellow | - | 20A | - | - | - | - | - | - | 12 | 2 | 24 | - | - | - | - | Barrier Block | - | Screws | 150V | 12-22 AWG | |
Cinch
<p>The Cinch 10-141 is a Series 141 double-row barrier block designed for industrial power distribution and control applications. It features 10 circuits with a 0.438" (11.12mm) center-to-center spacing and accepts up to 14 AWG wire. The block is rated for 250VAC RMS maximum and 20 Amps maximum, with a maximum power dissipation of 5000W per terminal.</p><p> </p><p>Constructed with a molded monoblock black phenolic insulation rated UL94V-1, the block uses brass nickel-plated terminals and steel nickel-plated screws (6-32 x 1/4"). The combination/binder head screw design provides reliable top termination. Recommended screw torque is 14 lb-in, and mounting hole torque is 7 lbs.</p><p> </p><p>The barrier block features interposing barriers between terminals for higher electrical ratings and protection against short circuits. It is designed for chassis or panel mounting using the integral flange. The operating temperature range is -55°F to +300°F (-48°C to +149°C).</p>
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4
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Price on request
4
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2 Wall (Dual) | Closed | Black | 20A | 20A | Flange | Phenolic, UL94V-1 | 11.12 mm | Screw | 5000W | Chassis, Panel (with Flange) | 10 | 2 | 20 | - | 11.12mm (0.438") | 6-32 x 1/4" | - | Barrier Block | Screw - Combination/Binder Head | Screws | 250V | 14 AWG | |
Phoenix Contact
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4
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Price on request
4
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Enclosed | Closed | Transparent | - | 55A | - | - | - | - | - | - | 12 | 2 | 24 | - | - | - | - | Eurostyle Terminal Strip | - | Screws | 300V | 6-10 AWG | |
TE Connectivity
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4
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Price on request
4
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3 Wall (Tri) | PC Pin | Black | - | 20A | - | - | - | - | - | - | 9 | 1 | 9 | - | 0.325" (8.26mm) | - | - | Barrier Block | - | Screws with Captive Plate | 150V | 12-22 AWG | |
Weidmüller
<p>The Weidmüller BK 6 CRN is a single- and multi-pole terminal strip from the BK series, designed for direct mounting. It features 6 circuits with 2 rows and 12 wire entries, providing a compact solution for wiring connections. The strip is rated for 10A current and 300V voltage, accepting wire gauges from 12 to 22 AWG. For two conductors, the cross-section range is 0.5 to 1.5 mm². The screw connection and enclosed barrier type ensure secure and safe terminations. The strip is colored medium yellow and comes in a standard package of 50 pieces. It is suitable for use in control panels, industrial equipment, and power distribution applications.</p>
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3
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Price on request
3
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Enclosed | Closed | Yellow | 10 A | 10A | - | - | - | Barrier Block | - | Direct mounting | 6 Circuits | 2 | 12 | - | - | - | - | Barrier Block | Screw | Screws | 300 V | 12-22 AWG | |
TE Connectivity
<p>The TE Connectivity 1977477-2 is a 2-circuit barrier block designed for reliable wire-to-board connections. It features a 8.26mm (0.325") pitch and a dual-wall barrier construction for enhanced isolation between circuits. The terminal block accepts wire gauges from 16 to 22 AWG and is rated for 15A at 300V.</p><p> </p><p>Termination is via screws with captive plate on top and PC pin on the bottom, making it suitable for soldered PCB mounting. The black housing supports side stacking (interlocking) to build multi-position assemblies without increasing board space.</p><p> </p><p>This component is commonly used in power distribution, control panels, and industrial equipment where secure, serviceable connections are required. The barrier design prevents accidental shorting between adjacent terminals.</p>
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2
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Price on request
2
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2 Wall (Dual) | PC Pin | Black | 15A | 15A | Side Stacking (Interlocking) | - | 8.26 mm | Barrier Block | - | - | 2 | 1 | 2 | - | 8.26mm (0.325") | - | - | Barrier Block | - | Screws with Captive Plate | 300V | 16-22 AWG | |
Curtis Industries
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1
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Price on request
1
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2 Wall (Dual) | Threaded, Insulated | Black | - | 20A | Flange | - | - | - | - | - | 16 | 1 | 16 | - | 0.438" (11.12mm) | - | - | Barrier Block | - | Screws | - | 12-22 AWG | |
WECO Electrical Connectors Inc.
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1
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Price on request
1
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Enclosed | Closed | White | - | 80A | - | - | - | - | - | - | 12 | 2 | 24 | - | 0.571" (14.50mm) | - | - | Eurostyle Terminal Strip | - | Screws | 300V | 4-14 AWG | |
Molex
|
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2 Wall (Dual) | Closed | Black | - | 15A | Flange | - | - | - | - | - | 8 | 2 | 16 | - | 0.375" (9.53mm) | - | - | Barrier Block | - | Screws | 300V | 14-22 AWG | |
TE Connectivity
|
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2 Wall (Dual) | Closed | Black | - | 20A | Flange | - | - | - | - | - | 8 | 2 | 16 | - | 0.374" (9.50mm) | - | - | Barrier Block | - | Screws | 300V | 12-22 AWG | |
Molex
|
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3 Wall (Tri) | PC Pin | Black | - | 45A | - | - | - | - | - | - | 2 | 1 | 2 | - | 0.500" (12.70mm) | - | - | Barrier Block | - | Screws with Captive Plate | 600V | 8-18 AWG | |
Weidmüller
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Enclosed | Closed | Yellow | - | 20A | - | - | - | - | - | - | 2 | 2 | 4 | - | - | - | - | Barrier Block | - | Screws | 300V | 12-22 AWG | |
On Shore Technology Inc.
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Enclosed | Closed | - | - | 15A | - | - | - | - | - | - | 8 | 2 | 16 | - | 0.315" (8.00mm) | - | - | Eurostyle Terminal Strip | - | Screws | 300V | 14-22 AWG | |
On Shore Technology Inc.
|
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Price on request
Price and Stock
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2 Wall (Dual) | PC Pin | Black | - | 30A | - | - | - | - | - | - | 2 | 1 | 2 | - | 0.374" (9.50mm) | - | - | Barrier Block | - | Screws with Captive Plate | 300V | 10-22 AWG | |
TE Connectivity
|
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2 Wall (Dual) | Closed | Black | - | 25A | Flange | - | - | - | - | - | 6 | 2 | 12 | - | 0.437" (11.10mm) | - | - | Barrier Block | - | Screws | 300V | 14-22 AWG | |
TE Connectivity
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
3 Wall (Tri) | PC Pin | Black | - | 30A | - | - | - | - | - | - | 6 | 1 | 6 | - | 0.438" (11.12mm) | - | - | Barrier Block | - | Screws with Captive Plate | 600V | 10-18 AWG | |
On Shore Technology Inc.
|
Send RFQ |
Price on request
Price and Stock
on Request Send RFQ |
2 Wall (Dual) | PC Pin | Black | - | 30A | - | - | - | - | - | - | 3 | 1 | 3 | - | 0.374" (9.50mm) | - | - | Barrier Block | - | Screws with Captive Plate | 300V | 10-22 AWG | |
TE Connectivity
|
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Enclosed | Closed | Natural | - | 30A | - | - | - | - | - | - | 12 | 2 | 24 | - | 0.315" (8.00mm) | - | - | Eurostyle Terminal Strip | - | Screws | 250V | 12-22 AWG | |
Molex
|
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Price and Stock
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2 Wall (Dual) | Closed | Black | - | 15A | Flange | - | - | - | - | - | 4 | 2 | 8 | - | 0.375" (9.53mm) | - | - | Barrier Block | - | Screws | 300V | 14-22 AWG | |
Cinch
|
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2 Wall (Dual) | Closed | Black | - | 30A | Flange | - | - | - | - | - | 8 | 2 | 16 | - | 0.563" (14.30mm) | - | - | Barrier Block | - | Screws | 250V | 10 AWG | |
TE Connectivity
|
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3 Wall (Tri) | PC Pin | Black | - | 25A | - | - | - | - | - | - | 8 | 1 | 8 | - | 0.375" (9.53mm) | - | - | Barrier Block | - | Screws | 300V | 12-22 AWG | |
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Molex
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