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CBW58-BL-40A-5X Thermal circuit breaker rated 40A, 125/250 VAC and 32/50 VDC, with push-to-reset actuator and panel mount. Suitable for marine and industrial applications.
Mfr Part #:

CBW58-BL-40A-5X

Available from 1 distributors
Mfr Name: OptiFuse
OptiFuse
Thermal circuit breaker rated 40A, 125/250 VAC and 32/50 VDC, with push-to-reset actuator and panel mount. Suitable for marine and industrial applications.
Total Stock: 10 pcs

CBW58-BL-40A-5X Available from 1 distributor

Authorised
Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
10 pcs
10 pcs On Request 1 40 On Request On Request On Request On Request

CBW58-BL-40A-5X Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Actuator Type
Approval Agency
Body Color
Breaker Type
Contact Endurance
Current Rating
Current Rating (Amps)
Dielectric Strength
Frequency
Illumination
Insulation Resistance
Marine Ignition Protected
Mounting Type
Number of Poles
Operating Temperature
Reset Time
Terminal Finish
Voltage Rating
Voltage Rating AC
Voltage Rating DC
interrupting_rating (Nominal @ 125/250 VAC)
interrupting_rating (Nominal @ 50 VDC)
time_current_characteristic (Maximum @ 150% of rated current)
time_current_characteristic (Minimum/Maximum @ 200% of rated current)
time_current_characteristic (Minimum/Maximum @ 300% of rated current)
time_current_characteristic (Nominal @ 100% of rated current)
torque_rating (Nominal @ metal nut on metal thread)
torque_rating (Nominal @ metal nut on plastic thread)
torque_rating (Nominal @ plastic nut on plastic thread)

CBW58-BL-40A-5X Description

Short technical summary and product information.

The OptiFuse CBW58-BL-40A-5X is a single-pole thermal circuit breaker rated for 40A continuous current. It handles 125/250 VAC (50-60 Hz) and 32/50 VDC, with interrupting ratings of 1000A at 125/250 VAC and 300A at 50 VDC. The push-to-reset actuator provides manual reset after a fault, with a 60-second reset time. Time-current characteristics ensure no trip at 100% rated current, trip within 1 hour at 150%, 5-30 seconds at 200%, and 1.5-5 seconds at 300%.

 

Mounting is panel mount with a black plastic body and tin-plated terminals. The breaker is marine ignition protected to SAE J1171 and UL1500, making it suitable for marine and automotive environments. It operates from -10°C to +60°C and has a dielectric strength of 1500 VAC. This breaker meets cURus and UR safety standards.

CBW58-BL-40A-5X Quick Information

Product Type: Thermal Circuit Breaker
Series: CBW58
Canonical Name: CBW58-BL-40A-5X Thermal Circuit Breaker, 40A, 125/250 VAC, 32/50 VDC, Push to Reset
Subcategory: Thermal Circuit Breaker

CBW58-BL-40A-5X Compliance

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

CBW58-BL-40A-5X Features

  • 40A thermal overload protection.
  • Rated for 125/250 VAC and 32/50 VDC.
  • Push-to-reset manual actuator.
  • Panel mount with black plastic body.
  • cURus and UR approved.

CBW58-BL-40A-5X Applications

  • Marine and automotive power distribution.
  • Industrial equipment overcurrent protection.
  • Panel-mounted circuit protection systems.
  • Battery and DC load protection.

CBW58-BL-40A-5X FAQs

6 frequently asked questions generated from this part’s specifications.
What is the voltage rating of the CBW58-BL-40A-5X?

125/250 VAC and 32/50 VDC.

What is the operating temperature range?

-10°C to +60°C.

Is this circuit breaker RoHS compliant?

The manufacturer states RoHS3 compliant, but this is unverified. Check with OptiFuse for certification.

What is the interrupting rating?

1000A at 125/250 VAC and 300A at 50 VDC.

Is the CBW58-BL-40A-5X marine ignition protected?

Yes, it meets SAE J1171 and UL1500 standards.

What type of actuator does this breaker use?

Push-to-reset manual actuator.

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