CMB-053-27G6N-B-A Equivalent & Substitute Parts

Part Overview

The CMB-053-27G6N-B-A 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 with full compliance to CE, cUL, TUV, UL1077, and UL1500 standards. The component is RoHS3 compliant and REACH unaffected. Substitute parts are identified to address inventory availability, lead time requirements, or specific application packaging needs while maintaining electrical and mechanical compatibility.

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

Substitute Part Grouping Explanation

Substitute parts are qualified based on strict electrical and mechanical parameter matching. All identified substitutes maintain the following critical parameters identical to the CMB-053-27G6N-B-A:

Current Rating: 5A
Voltage Rating - AC: 250V
Mounting Type: Panel Mount
Actuator Type: Push to Reset
Number of Poles: 1
Breaker Type: Thermal
Illumination: None

All substitute parts are manufactured by OptiFuse under the CBW57 series. The DC voltage rating for substitute parts is 50V, which exceeds the 32V DC specification of the main part, providing enhanced capability within the same application envelope. All substitutes maintain active product status and RoHS3 compliance. Packaging is bulk format across all substitutes.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Current Rating (A)	Voltage AC (V)	Voltage DC (V)	Mounting Type	Actuator Type	Poles	Breaker Type	Product Status	RoHS Status
CMB-053-27G6N-B-A	Carling Technologies	5	250	32	Panel Mount	Push to Reset	1	Thermal	Active	ROHS3 Compliant
CBW57-EJ-5A	OptiFuse	5	250	50	Panel Mount	Push to Reset	1	Thermal	Active	ROHS3 Compliant
CBW57-EL4-5A	OptiFuse	5	250	50	Panel Mount	Push to Reset	1	Thermal	Active	ROHS3 Compliant
CBW57-ES-5A	OptiFuse	5	250	50	Panel Mount	Push to Reset	1	Thermal	Active	ROHS3 Compliant
CBW57-PF-5A-5X	OptiFuse	5	250	50	Panel Mount	Push to Reset	1	Thermal	Active	ROHS3 Compliant
CBW57-PL-5A-5X	OptiFuse	5	250	50	Panel Mount	Push to Reset	1	Thermal	Active	ROHS3 Compliant
CBW57-PS-5A	OptiFuse	5	250	50	Panel Mount	Push to Reset	1	Thermal	Active	ROHS3 Compliant
CBW57-PS-5A-1X	OptiFuse	5	250	50	Panel Mount	Push to Reset	1	Thermal	Active	ROHS3 Compliant
CBW57-PS-5A-5X	OptiFuse	5	250	50	Panel Mount	Push to Reset	1	Thermal	Active	ROHS3 Compliant
CBW57-PS-5A-W	OptiFuse	5	250	50	Panel Mount	Push to Reset	1	Thermal	Active	ROHS3 Compliant

Engineering Selection Recommendations

All identified substitute parts maintain full electrical and mechanical compatibility with the CMB-053-27G6N-B-A. Selection among the CBW57 series alternatives is determined by application-specific requirements and inventory availability.

Compliance Considerations: All substitute parts hold active product status and maintain RoHS3 compliance. OptiFuse CBW57 series parts carry cURus, IP 40, SAE J1171, UL 1077, and UL 1500 certifications. The original CMB-053-27G6N-B-A carries CE, cUL, TUV, UL1077, and UL1500 certifications. Both certification sets satisfy UL1077 and UL1500 standards.

DC Voltage Rating: Substitute parts are rated for 50V DC, exceeding the 32V DC specification of the main part. This enhanced rating does not restrict application in circuits operating at or below 32V DC.

Inventory Availability: OptiFuse CBW57 series parts demonstrate higher stock levels across all variants, ranging from 798 to 5629 units, compared to 682 units of the CMB-053-27G6N-B-A.

Part Number Variants: The CBW57 series includes multiple part number suffixes (EJ, EL4, ES, PF, PL, PS, PS-1X, PS-5X, PS-W) that reflect internal design or packaging variations. All variants maintain identical electrical specifications and panel-mount mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can CBW57 series parts directly replace the CMB-053-27G6N-B-A in existing designs?

A: Yes. All CBW57 series substitutes maintain identical current rating (5A), AC voltage rating (250V), mounting type (panel mount), actuator type (push to reset), pole count (1), and breaker type (thermal). The 50V DC rating of CBW57 parts exceeds the 32V DC specification and does not restrict compatibility in applications operating at or below 32V DC.

Q: What is the significance of the part number suffixes in the CBW57 series?

A: Part number suffixes (EJ, EL4, ES, PF, PL, PS, PS-1X, PS-5X, PS-W) indicate internal design or packaging variations within the CBW57 series. All variants maintain identical electrical and mechanical parameters relevant to substitution.

Q: Are there certification differences between the CMB-053-27G6N-B-A and CBW57 substitutes?

A: The CMB-053-27G6N-B-A carries CE, cUL, TUV, UL1077, and UL1500 certifications. CBW57 series parts carry cURus, IP 40, SAE J1171, UL 1077, and UL 1500 certifications. Both meet UL1077 and UL1500 standards. Application-specific certification requirements should be verified against circuit design specifications.

Q: What is the packaging format for substitute parts?

A: All identified CBW57 series substitutes are supplied in bulk packaging format.

Q: Does the higher DC voltage rating of CBW57 parts affect circuit performance?

A: No. The 50V DC rating of CBW57 parts is a maximum rating specification. Operation at or below 32V DC remains within the qualified operating envelope and does not alter thermal trip characteristics or response behavior.

Q: Are all CBW57 variants electrically interchangeable?

A: Yes. All CBW57 variants listed maintain identical electrical specifications: 5A current rating, 250V AC, 50V DC, single pole, thermal breaker type, and push-to-reset actuation. Part number suffixes reflect design or packaging variations that do not affect electrical interchangeability.

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