CLB-063-27ENN-B-A Circuit Breaker Thermal 6A 250V AC 32V DC

Part Overview

The CLB-063-27ENN-B-A is a single-pole thermal circuit breaker manufactured by Carling Technologies, rated for 6A at 250V AC and 32V DC with push-to-reset panel mount operation. This product is active in inventory with 857 pieces available. Finding suitable substitute parts becomes necessary for supply chain continuity, alternative sourcing strategies, or when primary components experience extended lead times or allocation constraints.

Substiute Parts

CLB-063-27ENN-B-A

Carling TechnologiesIn Stock: 956CLB-063-27ENN-B-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 CLB-063-27ENN-B-A are determined by electrical and mechanical parameter equivalence. The critical selection parameters are: current rating (6A), AC voltage rating (250V), mounting configuration (panel mount), actuation method (push to reset), and pole count (single pole). The CBW57 series from OptiFuse meets these core requirements while maintaining thermal breaker functionality. All substitute parts listed carry ROHS3 compliance and active product status, ensuring regulatory alignment with the primary component.

The substitute parts CBW57-EJ-6A, CBW57-EL4-6A, and CBW57-ES-6A represent parametric equivalents within the CBW57 series, distinguished by their specific actuator variants and certification profiles rather than fundamental electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active product status and ROHS3 compliance, ensuring long-term availability and regulatory conformance. The CBW57 series alternatives from OptiFuse provide certified thermal switching characteristics at matched current and AC voltage specifications.

When selecting between CBW57-EJ-6A, CBW57-EL4-6A, and CBW57-ES-6A, the choice depends on specific application approvals required. The OptiFuse parts carry cURus, IP 40, SAE J1171, UL 1077, and UL 1500 certifications. The primary Carling Technologies part carries CE, cUL, TUV, UL1077, and UL1500 approvals. Circuit design using these substitutes should reference the specific certification requirements for the target application.

The DC voltage rating differential (CLB-063-27ENN-B-A at 32V DC versus CBW57 variants at 50V DC) represents a design parameter. Applications operating at or below 32V DC with the Carling part can utilize the OptiFuse alternatives, as the 50V DC rating of the substitutes provides increased DC margin.

Frequently Asked Questions (FAQ)

Q: Can CBW57-EJ-6A, CBW57-EL4-6A, or CBW57-ES-6A directly replace CLB-063-27ENN-B-A?

A: These parts are parametric equivalents matching the 6A current rating, 250V AC voltage specification, panel mount configuration, and push-to-reset actuation. All maintain thermal breaker functionality and single-pole design. The substitutes operate at 50V DC, which is higher than the CLB-063-27ENN-B-A 32V DC rating, providing compatibility in applications rated at or below 32V DC.

Q: What are the key electrical parameters for substitution?

A: Current rating (6A), AC voltage rating (250V), DC voltage rating (minimum 32V), mounting type (panel mount), actuator type (push to reset), and pole count (single pole) determine substitution validity.

Q: Are all substitute parts RoHS compliant?

A: All listed parts—the CLB-063-27ENN-B-A and the CBW57 series variants—carry ROHS3 compliance status.

Q: How do the certification profiles differ?

A: The Carling Technologies CLB-063-27ENN-B-A carries CE, cUL, TUV, UL1077, and UL1500 approvals. The OptiFuse CBW57 variants carry cURus, IP 40, SAE J1171, UL 1077, and UL 1500 certifications. Both include UL1077 and UL1500 coverage. Application-specific certification requirements should be verified during design phase.

Q: What inventory levels are available?

A: The primary part CLB-063-27ENN-B-A has 857 pieces in stock. The OptiFuse substitutes are available in larger quantities: CBW57-EJ-6A (1366 pieces), CBW57-EL4-6A (1393 pieces), and CBW57-ES-6A (2884 pieces).