CMB-073-11C3B-B-A/07 Equivalent & Substitute Parts

Part Overview

The CMB-073-11C3B-B-A/07 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 holds Active product status. The device is ROHS3 compliant and carries multiple approval agencies including CE, cUL, TUV, UL1077, and UL1500. Substitute parts are identified when equivalent electrical and mechanical parameters are required for applications where the original part is unavailable or when inventory constraints necessitate alternative sourcing.

Substiute Parts

CMB-073-11C3B-B-A/07

Carling TechnologiesIn Stock: 830CMB-073-11C3B-B-A/07 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 CMB-073-11C3B-B-A/07 are qualified based on the following critical parameters:

Electrical Equivalence Requirements:

• Current Rating: 7A (exact match)
• Voltage Rating - AC: 250V (exact match)
• Voltage Rating - DC: 32V minimum (substitutes rated at 50V DC exceed this requirement and remain compatible)

Mechanical Equivalence Requirements:

• Breaker Type: Thermal (exact match)
• Mounting Type: Panel Mount (exact match)
• Actuator Type: Push to Reset (exact match)
• Number of Poles: 1 (exact match)

Compliance Requirements:

• ROHS3 Compliant (all substitutes meet this requirement)
• Active product status (all substitutes maintain active status)

All four substitute parts from the OptiFuse CBW57 series meet these criteria. The DC voltage rating differential (50V DC on substitutes versus 32V DC on the main part) does not disqualify substitution, as higher voltage ratings provide equivalent or superior performance in lower-voltage applications.

Parameter Comparison

Engineering Selection Recommendations

All four OptiFuse CBW57 series circuit breakers qualify as direct substitutes for the CMB-073-11C3B-B-A/07 based on electrical and mechanical parameter equivalence. Selection among the substitute options should be based on the following factors:

Approval Agency Alignment: The main part carries CE, cUL, TUV, UL1077, and UL1500 certifications. All substitute parts carry cURus, IP 40, SAE J1171, UL 1077, and UL 1500 certifications. Both sets of certifications support industrial and commercial applications.

Inventory Availability: CBW57-ES-7A-5H offers the highest inventory level at 2,482 pieces, followed by CBW57-EL4-7A at 1,998 pieces. CBW57-EJ-7A provides 1,884 pieces, and CBW57-HS-7A-5C provides 1,197 pieces.

Compliance Status: All substitute parts maintain ROHS3 compliance and Active product status. CBW57-HS-7A-5C explicitly documents REACH Unaffected status, consistent with the main part.

Moisture Sensitivity: All OptiFuse substitutes carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity constraints during storage or handling.

Frequently Asked Questions (FAQ)

Q: Can CBW57 series circuit breakers directly replace the CMB-073-11C3B-B-A/07?

A: Yes. All four CBW57 variants (CBW57-EJ-7A, CBW57-EL4-7A, CBW57-ES-7A-5H, and CBW57-HS-7A-5C) meet the electrical and mechanical requirements for direct substitution. Current rating, AC voltage rating, mounting type, actuator type, and pole count are identical. The DC voltage rating on substitutes (50V) exceeds the main part specification (32V), maintaining compatibility.

Q: What is the significance of the higher DC voltage rating on substitute parts?

A: The 50V DC rating on OptiFuse substitutes provides a higher voltage margin than the 32V DC specification of the main part. In applications operating at or below 32V DC, the substitute parts operate within their rated specifications with additional safety margin. This does not create incompatibility.

Q: Are there differences in approval agencies between the main part and substitutes?

A: The main part carries CE, cUL, TUV, UL1077, and UL1500 certifications. Substitute parts carry cURus, IP 40, SAE J1171, UL 1077, and UL 1500 certifications. Both certification sets support industrial and commercial circuit breaker applications. UL 1077 and UL 1500 are common to both.

Q: Do all substitute parts have identical packaging?

A: All four substitute parts are supplied in Bulk packaging, consistent with standard industrial distribution for circuit breakers.

Q: Which substitute part offers the best inventory position?

A: CBW57-ES-7A-5H provides the highest inventory availability at 2,482 pieces in stock.

Q: Are there any moisture sensitivity considerations for the substitute parts?

A: All OptiFuse CBW57 substitutes carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity constraints. Standard handling and storage practices apply.