CLB-053-12CNN-B-A/05 Equivalent & Substitute Parts

Part Overview

The CLB-053-12CNN-B-A/05 is a thermal circuit breaker manufactured by Carling Technologies, rated for 5A at 250V AC and 32V DC. This single-pole, panel-mount device features push-to-reset actuation and holds Active product status. The breaker is designed for overcurrent protection in low-voltage DC and AC applications requiring thermal response characteristics.

Substitute parts become necessary when the original CLB-053-12CNN-B-A/05 is unavailable, when alternative sourcing is required for supply chain optimization, or when design flexibility permits selection from qualified equivalent devices that meet the same electrical and mechanical specifications.

Key Parameters

Parameter	Value
Breaker Type	Thermal
Current Rating	5A
Voltage Rating - AC	250V
Voltage Rating - DC	32V
Mounting Type	Panel Mount
Actuator Type	Push to Reset
Number of Poles	1
Illumination	None
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the CLB-053-12CNN-B-A/05 are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

Current Rating: 5A (exact match required)
Voltage Rating - AC: 250V (exact match required)
Mounting Type: Panel Mount (exact match required)
Actuator Type: Push to Reset (exact match required)
Number of Poles: 1 (exact match required)
Breaker Type: Thermal (exact match required)

Allowable Variation:

Voltage Rating - DC: The main part specifies 32V DC. Substitute parts rated at 50V DC are acceptable, as higher DC voltage ratings provide equivalent or superior performance in applications requiring 32V DC operation.

All substitute parts listed are manufactured by OptiFuse under the CBW57 series and maintain Active product status with ROHS3 compliance and equivalent regulatory approvals.

Parameter Comparison

Parameter	CLB-053-12CNN-B-A/05	CBW57-EJ-5A	CBW57-EL4-5A	CBW57-ES-5A	CBW57-PF-5A-5X	CBW57-PL-5A-5X	CBW57-PS-5A	CBW57-PS-5A-1X	CBW57-PS-5A-5X	CBW57-PS-5A-W
Manufacturer	Carling Technologies	OptiFuse	OptiFuse	OptiFuse	OptiFuse	OptiFuse	OptiFuse	OptiFuse	OptiFuse	OptiFuse
Breaker Type	Thermal	Thermal	Thermal	Thermal	Thermal	Thermal	Thermal	Thermal	Thermal	Thermal
Current Rating (Amps)	5A	5A	5A	5A	5A	5A	5A	5A	5A	5A
Voltage Rating - AC	250V	250V	250V	250V	250V	250V	250V	250V	250V	250V
Voltage Rating - DC	32V	50V	50V	50V	50V	50V	50V	50V	50V	50V
Mounting Type	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount
Actuator Type	Push to Reset	Push to Reset	Push to Reset	Push to Reset	Push to Reset	Push to Reset	Push to Reset	Push to Reset	Push to Reset	Push to Reset
Number of Poles	1	1	1	1	1	1	1	1	1	1
Illumination	None	None	None	None	None	None	None	None	None	None
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All listed substitute parts are qualified equivalents for the CLB-053-12CNN-B-A/05 based on matching electrical specifications and mechanical form factors. Selection among the OptiFuse CBW57 series alternatives may be based on the following factors:

Regulatory Compliance: The main part carries approvals from CE, cUL, TUV, UL1077, and UL1500. All substitute parts carry cURus, IP 40, SAE J1171, UL 1077, and UL 1500 approvals. Both approval sets satisfy industrial and commercial circuit protection standards.

Product Availability: All substitute parts maintain Active product status with current inventory levels ranging from 798 to 5629 units, ensuring supply continuity.

Environmental Compliance: All substitute parts are ROHS3 compliant and REACH unaffected, matching the environmental standards of the original part.

DC Voltage Rating Consideration: Substitute parts are rated for 50V DC compared to the original 32V DC rating. This higher rating does not compromise performance in 32V DC applications and provides additional design margin for systems operating at or below 32V DC.

Frequently Asked Questions (FAQ)

Q: Can OptiFuse CBW57 series breakers directly replace the Carling Technologies CLB-053-12CNN-B-A/05?

A: Yes. All listed OptiFuse CBW57 variants are direct electrical and mechanical equivalents. They share identical current ratings (5A), AC voltage ratings (250V), mounting configurations (panel mount), actuation methods (push to reset), and pole counts (1). The higher DC voltage rating (50V vs. 32V) does not prevent substitution in 32V DC applications.

Q: What is the significance of the different CBW57 part number suffixes (EJ, EL4, ES, PF, PL, PS, etc.)?

A: The suffixes denote internal design variations, connector types, or manufacturing configurations within the CBW57 series. All variants listed maintain identical electrical specifications and are functionally equivalent for the stated application parameters.

Q: Are there any compatibility issues when substituting between these parts?

A: No compatibility issues exist when substituting among the listed parts. All devices are single-pole, panel-mount thermal breakers with push-to-reset actuation, identical current and AC voltage ratings, and equivalent mechanical mounting interfaces.

Q: Does the 50V DC rating of substitute parts affect performance in 32V DC circuits?

A: No. A higher DC voltage rating indicates the device can safely operate at voltages up to 50V DC. Circuits operating at 32V DC remain within the safe operating range and experience no performance degradation.

Q: What packaging options are available?

A: All parts listed are supplied in Bulk packaging, consistent with the original CLB-053-12CNN-B-A/05 specification.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed OptiFuse CBW57 variants are ROHS3 compliant and REACH unaffected, matching the environmental compliance profile of the original Carling Technologies part.

Q: Which substitute part should be selected if multiple options are available?

A: Selection among equivalent parts may be based on inventory availability, lead time, or internal procurement preferences. All listed parts are functionally and electrically identical for the specified application.

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