CMB-153-11C3B-B-A Equivalent & Substitute Parts

Part Overview

The CMB-153-11C3B-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 device features push-to-reset actuation and is designed for overcurrent protection in industrial and commercial applications. The part maintains Active product status with full compliance to CE, cUL, TUV, UL1077, and UL1500 standards. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design flexibility permits component selection from qualified manufacturers.

Key Parameters

Parameter	Value
Manufacturer	Carling Technologies
Part Number	CMB-153-11C3B-B-A
Series	CMB
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
Product Status	Active
RoHS Status	ROHS3 Compliant
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute parts for the CMB-153-11C3B-B-A are qualified based on the following critical parameters that determine functional equivalence:

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

Allowable Variation:

Voltage Rating - DC: The main part specifies 32V DC. Substitute parts from OptiFuse (CBW57 series) are rated for 50V DC, which represents a higher voltage capability and remains compatible for applications requiring 32V DC operation.

All substitute parts are manufactured by OptiFuse under the CBW57 series designation and maintain Active product status with ROHS3 compliance and REACH Unaffected status. Approval agencies include cURus, IP 40, SAE J1171, UL 1077, and UL 1500, providing equivalent regulatory coverage to the main part.

Parameter Comparison

Parameter	CMB-153-11C3B-B-A	CBW57-EJ-15A	CBW57-EL4-15A	CBW57-ES-15A	CBW57-ES-15A-5X	CBW57-GS-15A-WB	CBW57-HB-15A-P	CBW57-HS-15A-5X	CBW57-PB-15A	CBW57-PB-15A-5X	CBW57-PB-15A-WX
Manufacturer	Carling Technologies	OptiFuse	OptiFuse	OptiFuse	OptiFuse	OptiFuse	OptiFuse	OptiFuse	OptiFuse	OptiFuse	OptiFuse
Current Rating (Amps)	15A	15A	15A	15A	15A	15A	15A	15A	15A	15A	15A
Voltage Rating - AC	250V	250V	250V	250V	250V	250V	250V	250V	250V	250V	250V
Voltage Rating - DC	32V	50V	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	Panel Mount
Breaker Type	Thermal	Thermal	Thermal	Thermal	Thermal	Thermal	Thermal	Thermal	Thermal	Thermal	Thermal
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	Push to Reset
Number of Poles	1	1	1	1	1	1	1	1	1	1	1
Illumination	None	None	None	None	None	None	None	None	None	None	None
Product Status	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and satisfy the core electrical and mechanical requirements of the CMB-153-11C3B-B-A. The OptiFuse CBW57 series components provide equivalent functionality across all critical parameters with the exception of DC voltage rating, where the 50V DC specification exceeds the 32V DC requirement of the main part.

Compliance Considerations:

The main part carries approvals from CE, cUL, TUV, UL1077, and UL1500. Substitute parts carry approvals from cURus, IP 40, SAE J1171, UL 1077, and UL 1500. Both sets of parts maintain ROHS3 compliance and REACH Unaffected status, confirming environmental and regulatory alignment.

Inventory Availability:

The following substitute parts demonstrate highest inventory levels and are suitable for immediate procurement:

CBW57-HB-15A-P: 8,822 units
CBW57-ES-15A: 3,521 units
CBW57-HS-15A-5X: 1,831 units
CBW57-PB-15A-5X: 1,862 units

Packaging Considerations:

All substitute parts are supplied in Bulk packaging. The main part packaging designation is listed as hyphen (-), indicating standard industrial packaging. Bulk packaging from OptiFuse is consistent with standard distribution practices for thermal circuit breakers.

Frequently Asked Questions (FAQ)

Q: Can OptiFuse CBW57 series parts directly replace the Carling Technologies CMB-153-11C3B-B-A?

A: Yes. All listed OptiFuse CBW57 parts match the mandatory electrical and mechanical parameters: 15A current rating, 250V AC voltage rating, panel mount configuration, thermal breaker type, push-to-reset actuation, and single-pole design. The 50V DC rating of OptiFuse parts exceeds the 32V DC specification of the main part, providing compatibility for applications operating at or below 32V DC.

Q: What is the significance of the higher DC voltage rating on substitute parts?

A: The OptiFuse CBW57 series is rated for 50V DC compared to the 32V DC rating of the CMB-153-11C3B-B-A. A higher voltage rating indicates the component can safely operate across a broader voltage range. For applications requiring 32V DC operation, the 50V DC-rated substitute parts operate within their specified limits and provide equivalent protection.

Q: Are the approval agencies equivalent between the main part and substitutes?

A: The main part carries CE, cUL, TUV, UL1077, and UL1500 approvals. Substitute parts carry cURus, IP 40, SAE J1171, UL 1077, and UL 1500 approvals. Both sets include UL 1077 and UL 1500 certifications, which are primary standards for thermal circuit breakers. The cURus approval on substitute parts represents combined Canadian and U.S. regulatory recognition. Both configurations satisfy industrial safety requirements.

Q: What does the suffix designation in part numbers (such as -5X, -WB, -P) indicate?

A: Suffix designations in OptiFuse part numbers identify specific connector, terminal, or packaging variations within the CBW57 series. All variants listed maintain identical electrical specifications (15A, 250V AC, 50V DC) and mechanical form factors (panel mount, push-to-reset, single-pole). Suffix variations do not affect functional equivalence for thermal protection applications.

Q: Are all substitute parts in Active product status?

A: Yes. All listed OptiFuse CBW57 substitute parts maintain Active product status, confirming ongoing manufacturer support, availability, and compliance with current standards.

Q: What is the difference between ROHS3 compliance and REACH Unaffected status?

A: ROHS3 Compliant indicates the component meets Restriction of Hazardous Substances Directive requirements, limiting specified hazardous materials in electrical equipment. REACH Unaffected status indicates the component is not subject to REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) restrictions. Both designations confirm environmental and regulatory compliance for industrial applications.

Q: Which substitute part offers the highest inventory availability?

A: CBW57-HB-15A-P provides the highest inventory level at 8,822 units in stock, followed by CBW57-ES-15A with 3,521 units. These parts are suitable for applications requiring immediate or high-volume procurement.

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