CLB-153-12CNN-B-A Circuit Breaker Equivalent & Substitute Parts

Part Overview

The CLB-153-12CNN-B-A is a thermal circuit breaker manufactured by Carling Technologies, rated for 15A at 250V AC and 32V DC. This single-pole, panel-mount breaker features push-to-reset actuation and is designed for overcurrent protection in electrical systems. The part maintains Active product status with full compliance to CE, cUL, TUV, UL1077, and UL1500 standards.

Substitute parts become necessary when the primary part experiences extended lead times, inventory constraints, or when design flexibility permits selection from qualified alternatives that meet identical electrical and mechanical specifications.

Key Parameters

Parameter	CLB-153-12CNN-B-A Specification
Breaker Type	Thermal
Current Rating	15A
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
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution eligibility for the CLB-153-12CNN-B-A is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Current Rating: 15A
Voltage Rating - AC: 250V
Mounting Type: Panel Mount
Breaker Type: Thermal
Actuator Type: Push to Reset
Number of Poles: 1
Illumination: None

Acceptable Variance:

Voltage Rating - DC: The main part specifies 32V DC. Substitute parts rated at 50V DC are acceptable as this represents a higher voltage capability that maintains backward compatibility with the 32V DC requirement.

All substitute parts listed are manufactured by OptiFuse under the CBW57 series and satisfy these equivalence criteria. Each substitute maintains Active product status and ROHS3 compliance.

Parameter Comparison

Part Number	Manufacturer	Current Rating	Voltage AC	Voltage DC	Mounting Type	Breaker Type	Actuator Type	Poles	RoHS Status
CLB-153-12CNN-B-A	Carling Technologies	15A	250V	32V	Panel Mount	Thermal	Push to Reset	1	ROHS3 Compliant
CBW57-EJ-15A	OptiFuse	15A	250V	50V	Panel Mount	Thermal	Push to Reset	1	ROHS3 Compliant
CBW57-EL4-15A	OptiFuse	15A	250V	50V	Panel Mount	Thermal	Push to Reset	1	ROHS3 Compliant
CBW57-ES-15A	OptiFuse	15A	250V	50V	Panel Mount	Thermal	Push to Reset	1	ROHS3 Compliant
CBW57-ES-15A-5X	OptiFuse	15A	250V	50V	Panel Mount	Thermal	Push to Reset	1	ROHS3 Compliant
CBW57-GS-15A-WB	OptiFuse	15A	250V	50V	Panel Mount	Thermal	Push to Reset	1	ROHS3 Compliant
CBW57-HB-15A-P	OptiFuse	15A	250V	50V	Panel Mount	Thermal	Push to Reset	1	ROHS3 Compliant
CBW57-HS-15A-5X	OptiFuse	15A	250V	50V	Panel Mount	Thermal	Push to Reset	1	ROHS3 Compliant
CBW57-PB-15A	OptiFuse	15A	250V	50V	Panel Mount	Thermal	Push to Reset	1	ROHS3 Compliant
CBW57-PB-15A-5X	OptiFuse	15A	250V	50V	Panel Mount	Thermal	Push to Reset	1	ROHS3 Compliant
CBW57-PB-15A-WX	OptiFuse	15A	250V	50V	Panel Mount	Thermal	Push to Reset	1	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts are qualified equivalents to the CLB-153-12CNN-B-A based on electrical and mechanical parameter alignment. Selection among the OptiFuse CBW57 series alternatives should be based on the following factors:

Inventory Availability: CBW57-HB-15A-P offers the highest inventory level at 8,822 pieces. CBW57-ES-15A provides 3,521 pieces. These options support rapid procurement timelines.

Regulatory Compliance: All substitute parts maintain ROHS3 compliance and REACH Unaffected status, matching the environmental and regulatory posture of the original part. OptiFuse substitutes carry cURus, IP 40, SAE J1171, UL 1077, and UL 1500 certifications, providing equivalent safety and performance validation.

Moisture Sensitivity: OptiFuse CBW57 series parts specify Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture-related handling restrictions during storage and assembly.

DC Voltage Capability: All OptiFuse substitutes are rated for 50V DC, exceeding the 32V DC requirement of the original part. This higher rating provides additional design margin without compromising compatibility.

Frequently Asked Questions (FAQ)

Q: Can CBW57 series parts directly replace the CLB-153-12CNN-B-A in existing designs?

A: Yes. All CBW57 series substitutes match the critical electrical parameters (15A, 250V AC, push-to-reset thermal operation) and mechanical form factor (single-pole, panel-mount). The 50V DC rating of OptiFuse parts exceeds the 32V DC specification, maintaining full backward compatibility.

Q: What is the significance of the different part number suffixes in the CBW57 series (EJ, EL4, ES, GS, HB, HS, PB, etc.)?

A: The suffixes denote internal design variations, connector configurations, or manufacturing process differences specific to OptiFuse. All variants listed maintain identical electrical specifications and are functionally equivalent for the 15A, 250V AC thermal circuit breaker application.

Q: Are there any packaging or lead-time differences between the substitute options?

A: All substitute parts are supplied in Bulk packaging. Inventory levels vary: CBW57-HB-15A-P (8,822 pcs), CBW57-ES-15A (3,521 pcs), and CBW57-HS-15A-5X (1,831 pcs) represent the highest availability options. Selection should account for procurement timeline requirements.

Q: Does the higher DC voltage rating (50V vs. 32V) affect circuit performance?

A: No. A higher voltage rating indicates the component can safely operate at higher voltages without degradation. In applications requiring only 32V DC, the 50V-rated substitute operates identically to the original part.

Q: Are all substitutes compliant with the same regulatory standards as the CLB-153-12CNN-B-A?

A: All OptiFuse CBW57 substitutes carry UL 1077 and UL 1500 certifications, matching the original part's UL compliance. OptiFuse parts additionally carry cURus and SAE J1171 certifications. All maintain ROHS3 compliance and REACH Unaffected status.

Q: Can I mix different CBW57 variants in the same assembly?

A: Yes. All listed CBW57 variants are electrically and mechanically equivalent. Mixed usage across multiple circuit positions is permissible where design does not require part-number uniformity for traceability or documentation purposes.

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