BK/S506-V-50-R Eaton BK/S506-V-50-R is a 50mA, 250VAC slow-blow glass cartridge fuse in a 5x20mm axial package. It offers a 35A breaking capacity at rated voltage.
Mfr Part #:

BK/S506-V-50-R

Available from 1 distributors
Mfr Name: Eaton - Electronics Division
Eaton - Electronics Division
Eaton BK/S506-V-50-R is a 50mA, 250VAC slow-blow glass cartridge fuse in a 5x20mm axial package. It offers a 35A breaking capacity at rated voltage.
Total Stock: 170 pcs
$ Price Range: $1.90 - $4.95

BK/S506-V-50-R Available from 1 distributor

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Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
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170 pcs
170 pcs On Request 1 On Request On Request 2026-02-25 06:16:38 On Request On Request

BK/S506-V-50-R Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Approval Agency
Breaking Capacity @ Rated Voltage
Current Rating (Amps)
Fuse Type
Lead Style
Melting I²t
Mounting Type
Response Time
Termination Style
Voltage Rating

BK/S506-V-50-R Description

Short technical summary and product information.

The Eaton BK/S506-V-50-R is a 50mA, 250VAC time-delay (slow-blow) glass cartridge fuse from the S506 series. It features a 5x20mm physical size with optional axial leads for through-hole mounting. The fuse is constructed with a glass tube and nickel-plated brass endcaps, designed to IEC 60127-2/3 standards.

 

Electrically, this fuse is rated for 50mA at 250VAC with a breaking capacity of 35A at 250VAC. It has a typical cold resistance of 9.24 ohms and a typical voltage drop of 800mV at rated current. The melting I²t is 0.0095 A²s, indicating its energy-handling capability during overload events.

 

The slow-blow response time makes this fuse suitable for applications with inrush currents or transient surges, where a fast-acting fuse would nuisance-trip. The 5x20mm glass cartridge format is a widely used industry standard, and the axial lead option facilitates through-hole PCB mounting.

 

This fuse carries approvals from multiple agencies including BSI, CCC, CSA, IMQ, SEMKO, UR, and VDE, supporting its use in a variety of equipment designs requiring recognized safety components.

BK/S506-V-50-R Quick Information

Product Type: Cartridge Fuse
Series: S506
Canonical Name: Eaton S506 Series 50mA 250VAC Slow-Blow Glass Cartridge Fuse, 5x20mm Axial
Subcategory: Glass Tube Fuse

BK/S506-V-50-R Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

BK/S506-V-50-R Estimated Pricing

Qty Low High
1+ $4.95 $4.95
5+ $4.11 $4.11
10+ $3.79 $3.79
50+ $3.14 $3.14
100+ $2.90 $2.90
300+ $2.55 $2.55
500+ $2.40 $2.40
1,000+ $2.21 $2.21
5,000+ $1.90 $1.90

Estimated market price range - modelled values for guidance only, not live distributor offers.

BK/S506-V-50-R Features

  • 50mA current rating at 250VAC.
  • Slow-blow time-delay response characteristic.
  • 35A breaking capacity at rated voltage.
  • 5x20mm glass cartridge with axial leads.
  • Multiple international safety agency approvals.

BK/S506-V-50-R Applications

  • Protects circuits with inrush current surges.
  • Suitable for power supply input protection.
  • Used in industrial control equipment.
  • Ideal for through-hole PCB mounting.

BK/S506-V-50-R FAQs

7 frequently asked questions generated from this part’s specifications.
What is the current rating of the Eaton BK/S506-V-50-R fuse?

The current rating is 50mA (0.05A).

What is the voltage rating of this fuse?

The voltage rating is 250VAC.

What is the breaking capacity of the BK/S506-V-50-R?

The breaking capacity is 35A at 250VAC.

What is the response time of this fuse?

The response time is slow-blow (time-delay).

What package or case does this fuse come in?

The package is 5mm x 20mm (axial), with a physical size of 0.218" Dia x 0.831" L (5.54mm x 21.10mm).

What is the cold resistance of this fuse?

The typical cold resistance is 9.24 ohms, measured at DC with less than 10% of rated current.

What is the melting I²t value for this fuse?

The melting I²t is 0.0095 A²s.

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