CMB-053-11CNN-B-A Equivalent & Substitute Parts

Part Overview

The CMB-053-11CNN-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. The breaker is certified to CE, cUL, TUV, UL1077, and UL1500 standards and is RoHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across alternative manufacturers, ensuring functional interchangeability in panel-mount applications requiring thermal protection at specified voltage and current ratings.

Substiute Parts

CMB-053-11CNN-B-A

Carling TechnologiesIn Stock: 800CMB-053-11CNN-B-A Datasheet

Current PartRFQ

CBW57-EJ-5A

OptiFuseIn Stock: 1053CBW57-EJ-5A Datasheet

Parametric EquivalentRFQ

CBW57-EL4-5A

OptiFuseIn Stock: 1716CBW57-EL4-5A Datasheet

Parametric EquivalentRFQ

CBW57-ES-5A

OptiFuseIn Stock: 5714CBW57-ES-5A Datasheet

Parametric EquivalentRFQ

CBW57-PF-5A-5X

OptiFuseIn Stock: 843CBW57-PF-5A-5X Datasheet

Parametric EquivalentRFQ

CBW57-PL-5A-5X

OptiFuseIn Stock: 1114CBW57-PL-5A-5X Datasheet

Parametric EquivalentRFQ

CBW57-PS-5A

OptiFuseIn Stock: 2235CBW57-PS-5A Datasheet

Parametric EquivalentRFQ

CBW57-PS-5A-1X

OptiFuseIn Stock: 1465CBW57-PS-5A-1X Datasheet

Parametric EquivalentRFQ

CBW57-PS-5A-5X

OptiFuseIn Stock: 1615CBW57-PS-5A-5X Datasheet

Parametric EquivalentRFQ

CBW57-PS-5A-W

OptiFuseIn Stock: 2176CBW57-PS-5A-W Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CMB-053-11CNN-B-A are qualified based on strict equivalence of the following parameters: breaker type (thermal), current rating (5A), AC voltage rating (250V), actuator type (push to reset), mounting configuration (panel mount), pole count (single pole), and product status (active). All substitute parts listed are manufactured by OptiFuse under the CBW57 series. While substitute parts carry a higher DC voltage rating of 50V compared to the main part's 32V DC specification, this represents an uprated capability that does not compromise compatibility in applications designed for the 32V DC maximum. All substitutes maintain identical AC voltage ratings, current ratings, thermal breaker operation, and panel-mount configuration. Compliance certifications differ between manufacturers but include equivalent international standards (cURus, UL 1077, UL 1500).

Parameter Comparison

Engineering Selection Recommendations

All listed OptiFuse CBW57 series circuit breakers are functionally equivalent to the CMB-053-11CNN-B-A for applications operating at 5A, 250V AC, and up to 32V DC. The substitute parts maintain identical thermal breaker operation, push-to-reset actuation, single-pole configuration, and panel-mount design. All substitute parts hold Active product status and RoHS3 compliance. The OptiFuse CBW57 series carries cURus, UL 1077, and UL 1500 certifications, which align with the primary international safety standards applicable to the main part. The higher DC voltage rating (50V) on all substitute parts does not restrict their use in 32V DC applications and provides additional operational margin. Selection among the CBW57 variants should be based on specific connector or terminal configurations required by the application, as indicated by the part number suffixes (EJ, EL4, ES, PF, PL, PS, PS-1X, PS-5X, PS-W). All variants maintain the core electrical and mechanical specifications necessary for direct substitution.

Frequently Asked Questions (FAQ)

Q: Can OptiFuse CBW57 series breakers directly replace the Carling CMB-053-11CNN-B-A?

A: Yes. All listed OptiFuse CBW57 variants are direct functional equivalents. They maintain identical current rating (5A), AC voltage rating (250V), actuator type (push to reset), mounting configuration (panel mount), and pole count (1). The higher DC voltage rating (50V versus 32V) on OptiFuse parts represents an uprated capability suitable for applications designed for the original 32V DC specification.

Q: What do the suffixes in OptiFuse part numbers (EJ, EL4, ES, PF, PL, PS, PS-1X, PS-5X, PS-W) indicate?

A: The suffixes denote variations in connector or terminal configurations. The core electrical and thermal protection characteristics remain constant across all variants. Selection should be based on the specific terminal or connector type required by the application's panel-mount installation.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed OptiFuse CBW57 circuit breakers are RoHS3 compliant, matching the environmental compliance of the original CMB-053-11CNN-B-A.

Q: Do the substitute parts carry equivalent safety certifications?

A: The OptiFuse CBW57 series carries cURus, UL 1077, and UL 1500 certifications. While the specific certification bodies differ from the original part (CE, cUL, TUV, UL1077, UL1500), the OptiFuse certifications cover equivalent international safety standards for thermal circuit breakers in the same application class.

Q: Why is the DC voltage rating higher on OptiFuse parts?

A: OptiFuse manufactures the CBW57 series with a 50V DC rating, which exceeds the original 32V DC specification. This uprated capability does not affect compatibility in applications designed for 32V DC operation and provides additional safety margin in the design.

Q: Are there inventory considerations when selecting a substitute?

A: All listed OptiFuse CBW57 variants maintain substantial inventory levels ranging from 798 to 5,629 pieces in stock, ensuring availability for production requirements.