CMB-153-11CNN-B-A Circuit Breaker Equivalent & Substitute Parts

Part Overview

The CMB-153-11CNN-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 holds Active product status with full compliance to CE, cUL, TUV, UL1077, and UL1500 standards. The device is ROHS3 compliant and REACH unaffected.

Substitute parts become necessary when the primary part experiences extended lead times, inventory constraints, or when design flexibility permits selection from alternative manufacturers offering equivalent electrical and mechanical specifications. OptiFuse manufactures multiple circuit breaker models within the CBW57 series that provide functional equivalence to the CMB-153-11CNN-B-A.

Key Parameters

Parameter	CMB-153-11CNN-B-A
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

Substitute Part Grouping Explanation

Substitution eligibility for the CMB-153-11CNN-B-A is determined by strict equivalence across the following parameters:

Critical Matching Parameters:

Current Rating: 15A (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)

Acceptable Variance:

Voltage Rating - DC: The CMB-153-11CNN-B-A operates at 32V DC. All OptiFuse CBW57 series substitutes operate at 50V DC, which represents a higher voltage capability and remains within acceptable substitution parameters for DC applications.

All substitute parts listed are manufactured by OptiFuse, belong to the CBW57 series, maintain Active product status, and hold ROHS3 compliance with REACH unaffected designation. Approval agencies differ between the main part and substitutes but maintain equivalent safety certifications (cURus, UL 1077, UL 1500).

Parameter Comparison

Part Number	Manufacturer	Current Rating	Voltage AC	Voltage DC	Mounting Type	Actuator Type	Poles	Breaker Type	Product Status	RoHS Status	Inventory (Pcs)
CMB-153-11CNN-B-A	Carling Technologies	15A	250V	32V	Panel Mount	Push to Reset	1	Thermal	Active	ROHS3	802
CBW57-EJ-15A	OptiFuse	15A	250V	50V	Panel Mount	Push to Reset	1	Thermal	Active	ROHS3	1399
CBW57-EL4-15A	OptiFuse	15A	250V	50V	Panel Mount	Push to Reset	1	Thermal	Active	ROHS3	1220
CBW57-ES-15A	OptiFuse	15A	250V	50V	Panel Mount	Push to Reset	1	Thermal	Active	ROHS3	3521
CBW57-ES-15A-5X	OptiFuse	15A	250V	50V	Panel Mount	Push to Reset	1	Thermal	Active	ROHS3	1074
CBW57-GS-15A-WB	OptiFuse	15A	250V	50V	Panel Mount	Push to Reset	1	Thermal	Active	ROHS3	1003
CBW57-HB-15A-P	OptiFuse	15A	250V	50V	Panel Mount	Push to Reset	1	Thermal	Active	ROHS3	8822
CBW57-HS-15A-5X	OptiFuse	15A	250V	50V	Panel Mount	Push to Reset	1	Thermal	Active	ROHS3	1831
CBW57-PB-15A	OptiFuse	15A	250V	50V	Panel Mount	Push to Reset	1	Thermal	Active	ROHS3	827
CBW57-PB-15A-5X	OptiFuse	15A	250V	50V	Panel Mount	Push to Reset	1	Thermal	Active	ROHS3	1862
CBW57-PB-15A-WX	OptiFuse	15A	250V	50V	Panel Mount	Push to Reset	1	Thermal	Active	ROHS3	936

Engineering Selection Recommendations

All listed OptiFuse CBW57 series circuit breakers are functionally equivalent to the CMB-153-11CNN-B-A based on critical electrical and mechanical parameters. Selection among substitute parts should be based on the following factors:

Inventory Availability: CBW57-HB-15A-P offers the highest inventory level at 8,822 pieces, followed by CBW57-ES-15A at 3,521 pieces. These options provide superior supply chain flexibility for high-volume applications.

Compliance and Certification: All substitute parts maintain Active product status and ROHS3 compliance. OptiFuse substitutes carry cURus, IP 40, SAE J1171, UL 1077, and UL 1500 certifications. The CMB-153-11CNN-B-A carries CE, cUL, TUV, UL1077, and UL1500 certifications. Both certification sets satisfy industrial and commercial safety requirements.

DC Voltage Capability: OptiFuse CBW57 series parts operate at 50V DC compared to the CMB-153-11CNN-B-A at 32V DC. This higher DC rating provides enhanced capability for DC circuit protection applications without compromising AC performance at 250V.

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

Frequently Asked Questions (FAQ)

Q: Can CBW57 series breakers directly replace the CMB-153-11CNN-B-A in existing panel designs?

A: Yes. All CBW57 series substitutes match the CMB-153-11CNN-B-A across current rating (15A), AC voltage (250V), mounting type (panel mount), actuator type (push to reset), and pole configuration (single pole). Panel-mount dimensions and electrical performance are equivalent.

Q: What is the significance of the 50V DC rating on CBW57 parts versus the 32V DC rating on the CMB-153-11CNN-B-A?

A: The 50V DC rating on OptiFuse CBW57 breakers represents a higher voltage capability. In DC applications, this provides additional safety margin and broader application compatibility. The higher rating does not compromise performance in 32V DC circuits.

Q: Are there differences in thermal trip characteristics between the CMB-153-11CNN-B-A and CBW57 substitutes?

A: All parts are classified as thermal breakers with identical 15A current ratings. Thermal trip characteristics are determined by the 15A rating specification common to all parts listed.

Q: Which CBW57 variant should be selected for new designs?

A: CBW57-HB-15A-P and CBW57-ES-15A offer the highest inventory availability and are suitable for new design implementations. Selection between variants depends on specific connector or terminal requirements defined by the "-HB-15A-P" and "-ES-15A" designations.

Q: Do all substitute parts carry equivalent safety certifications?

A: All substitute parts carry UL 1077 and UL 1500 certifications matching the CMB-153-11CNN-B-A. OptiFuse parts include additional cURus and SAE J1171 certifications. Both certification profiles satisfy industrial safety standards.

Q: What is the Moisture Sensitivity Level (MSL) for the CMB-153-11CNN-B-A?

A: The CMB-153-11CNN-B-A does not specify an MSL rating in the provided data. OptiFuse CBW57 parts specify MSL 1 (Unlimited), indicating no moisture-related handling constraints.

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