CMB-063-11CNN-R-A Equivalent & Substitute Parts

Part Overview

The CMB-063-11CNN-R-A is a thermal circuit breaker manufactured by Carling Technologies, rated for 6A at 250V AC and 32V DC with push-to-reset panel mount actuation. This single-pole breaker is designed for overcurrent protection in low-voltage DC and AC applications. The part maintains active product status and holds multiple international approvals including CE, cUL, TUV, UL1077, and UL1500 certifications. Substitute parts are identified when equivalent electrical and mechanical parameters are required for component replacement or design flexibility.

Substiute Parts

CMB-063-11CNN-R-A

Carling TechnologiesIn Stock: 1050CMB-063-11CNN-R-A Datasheet

Current PartRFQ

CBW57-EJ-6A

OptiFuseIn Stock: 1462CBW57-EJ-6A Datasheet

Parametric EquivalentRFQ

CBW57-EL4-6A

OptiFuseIn Stock: 1447CBW57-EL4-6A Datasheet

Parametric EquivalentRFQ

CBW57-ES-6A

OptiFuseIn Stock: 2941CBW57-ES-6A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CMB-063-11CNN-R-A are qualified based on the following critical parameters that must align with the main part specifications:

Mandatory Matching Parameters:

• Current Rating: 6A
• 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 substitute parts (CBW57 series) are rated for 50V DC, which exceeds the main part's 32V DC rating. This represents an upward-compatible substitution, as higher DC voltage rating capability does not restrict operation at lower voltages.

All identified substitute parts maintain ROHS3 compliance and active product status. The CBW57 series from OptiFuse meets all electrical and mechanical requirements for direct substitution in applications requiring 6A thermal circuit breaker protection at 250V AC and 32V DC or lower.

Parameter Comparison

Engineering Selection Recommendations

All three OptiFuse CBW57 series substitute parts (CBW57-EJ-6A, CBW57-EL4-6A, CBW57-ES-6A) are qualified equivalents for the CMB-063-11CNN-R-A. Selection among the three substitute options may be based on inventory availability and lead time requirements:

• CBW57-ES-6A: 2,884 pieces in stock
• CBW57-EL4-6A: 1,393 pieces in stock
• CBW57-EJ-6A: 1,366 pieces in stock

All substitute parts carry active product status and maintain compliance with ROHS3 requirements and REACH unaffected status. The CBW57 series holds approvals including cURus, IP 40, SAE J1171, UL 1077, and UL 1500, which provide equivalent or overlapping certification coverage with the main part's CE, cUL, TUV, UL1077, and UL1500 approvals.

Frequently Asked Questions (FAQ)

Q: Can CBW57 series breakers directly replace the CMB-063-11CNN-R-A in existing designs?

A: Yes. The CBW57 series maintains identical current rating (6A), AC voltage rating (250V), mounting configuration (panel mount), actuation method (push to reset), and pole count (1). The higher DC voltage rating (50V versus 32V) represents an upward-compatible specification that does not restrict operation at the original 32V DC design point.

Q: What is the significance of the different CBW57 part number suffixes (EJ, EL4, ES)?

A: The suffixes denote different connector or terminal configurations within the CBW57 series. All three variants maintain identical electrical ratings and thermal protection characteristics. Selection is based on mechanical interface requirements and connector type compatibility with the application.

Q: Are there any compliance or certification differences between the main part and substitutes?

A: Both the main part and substitute parts maintain ROHS3 compliance and REACH unaffected status. The substitute parts carry UL 1077 and UL 1500 certifications matching the main part. Additional certifications on the substitute parts (cURus, IP 40, SAE J1171) provide supplementary approvals without creating incompatibility.

Q: What packaging format is used for these circuit breakers?

A: Both the main part and all substitute parts are supplied in bulk packaging format, suitable for manufacturing assembly and component procurement workflows.

Q: Is the 50V DC rating of the CBW57 series compatible with 32V DC applications?

A: Yes. A component rated for 50V DC operation is fully compatible with applications requiring 32V DC protection. The higher voltage rating indicates the breaker can safely interrupt circuits at higher voltages, which does not affect performance at lower voltages within the rated current capacity.