CLB-073-12CNN-R-A Equivalent & Substitute Parts

Part Overview

The CLB-073-12CNN-R-A is a thermal circuit breaker manufactured by Carling Technologies, rated for 7A at 250V AC and 32V DC. This single-pole, panel-mount device features push-to-reset actuation and is designed for overcurrent protection in low-voltage applications. The part maintains active product status and carries 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

CLB-073-12CNN-R-A

Carling TechnologiesIn Stock: 981CLB-073-12CNN-R-A Datasheet

Current PartRFQ

CBW57-EJ-7A

OptiFuseIn Stock: 1957CBW57-EJ-7A Datasheet

Parametric EquivalentRFQ

CBW57-EL4-7A

OptiFuseIn Stock: 2075CBW57-EL4-7A Datasheet

Parametric EquivalentRFQ

CBW57-ES-7A-5H

OptiFuseIn Stock: 2494CBW57-ES-7A-5H Datasheet

Parametric EquivalentRFQ

CBW57-HS-7A-5C

OptiFuseIn Stock: 1288CBW57-HS-7A-5C Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CLB-073-12CNN-R-A are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Primary Matching Parameters:

• Current Rating: 7A (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)

Secondary Consideration:

• Voltage Rating - DC: The main part specifies 32V DC. Substitute parts rated at 50V DC exceed the minimum requirement and remain functionally compatible in applications operating at or below 32V DC.

All identified substitute parts are manufactured by OptiFuse under the CBW57 series and meet these criteria. Each substitute maintains ROHS3 compliance and active product status.

Parameter Comparison

Engineering Selection Recommendations

All four OptiFuse CBW57 series substitutes maintain active product status and ROHS3 compliance, matching the environmental and regulatory requirements of the CLB-073-12CNN-R-A. The substitute parts carry international approvals including cURus, UL 1077, and UL 1500 certifications, providing equivalent compliance coverage for most applications.

The primary electrical difference is the DC voltage rating: substitute parts are rated at 50V DC compared to the main part's 32V DC specification. This higher rating does not restrict substitution in applications operating at 32V DC or lower. The 50V DC rating provides additional margin in low-voltage DC circuits.

Selection among the four substitute options may be based on inventory availability and specific connector or terminal configurations indicated by the part number suffixes (EJ, EL4, ES-5H, HS-5C). All four substitutes are electrically and mechanically interchangeable within the specified parameter constraints.

Frequently Asked Questions (FAQ)

Q: Can OptiFuse CBW57 series parts directly replace the CLB-073-12CNN-R-A?

A: Yes. The four identified OptiFuse substitutes match all critical electrical and mechanical parameters: 7A current rating, 250V AC voltage rating, panel-mount configuration, push-to-reset actuation, and single-pole design. Physical form factor and terminal compatibility must be confirmed through mechanical drawings or direct comparison.

Q: Why do the substitute parts have a higher DC voltage rating (50V vs. 32V)?

A: The 50V DC rating on OptiFuse substitutes exceeds the minimum requirement of 32V DC. A higher voltage rating does not prevent operation at lower voltages. This specification difference does not restrict substitution in applications operating at or below 32V DC.

Q: Are all four OptiFuse substitutes electrically identical?

A: All four OptiFuse substitutes (CBW57-EJ-7A, CBW57-EL4-7A, CBW57-ES-7A-5H, CBW57-HS-7A-5C) share identical electrical specifications. Differences in part numbers reflect variations in connector type, terminal style, or internal configuration. Selection should be based on mechanical compatibility with the application's panel mount interface.

Q: What certifications do the substitute parts carry?

A: OptiFuse CBW57 series substitutes carry cURus, UL 1077, and UL 1500 approvals. The main part carries CE, cUL, TUV, UL1077, and UL1500 certifications. Both sets of approvals satisfy standard industrial and safety requirements for thermal circuit breakers.

Q: Is RoHS compliance maintained with these substitutes?

A: Yes. All four OptiFuse substitutes are ROHS3 compliant, matching the environmental compliance status of the CLB-073-12CNN-R-A.

Q: Can I use these substitutes in both AC and DC applications?

A: Yes. All parts are rated for both 250V AC and DC operation (32V DC for the main part, 50V DC for substitutes). Application voltage must not exceed the specified ratings.