CLB-043-11ANN-B-A Circuit Breaker Equivalent & Substitute Parts

Part Overview

The CLB-043-11ANN-B-A is a thermal circuit breaker manufactured by Carling Technologies, rated for 4A at 250V AC and 32V DC. This single-pole, panel-mount breaker 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-043-11ANN-B-A

Carling TechnologiesIn Stock: 1178CLB-043-11ANN-B-A Datasheet

Current PartRFQ

CBW57-EJ-4A

OptiFuseIn Stock: 1289CBW57-EJ-4A Datasheet

Parametric EquivalentRFQ

CBW57-ES-4A

OptiFuseIn Stock: 2935CBW57-ES-4A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CLB-043-11ANN-B-A are identified based on matching the following critical parameters:

• Current Rating: 4A
• Voltage Rating - AC: 250V
• Voltage Rating - DC: 32V or higher
• Breaker Type: Thermal
• Mounting Type: Panel Mount
• Actuator Type: Push to Reset
• Number of Poles: 1
• RoHS Compliance: ROHS3 Compliant

The substitute parts listed below maintain compatibility with these core electrical and mechanical specifications. The DC voltage rating in substitute parts may exceed the original specification, as higher voltage ratings provide backward compatibility in DC applications.

Parameter Comparison

Engineering Selection Recommendations

Both CBW57-ES-4A and CBW57-EJ-4A from OptiFuse serve as parametric equivalents to the CLB-043-11ANN-B-A. Selection between these options is based on the following factors:

Approval Agencies: The CLB-043-11ANN-B-A carries CE, cUL, TUV, UL1077, and UL1500 certifications. The OptiFuse substitutes carry cURus, IP 40, SAE J1171, UL 1077, and UL 1500 certifications. Applications requiring specific regional compliance should verify certification alignment with system requirements.

DC Voltage Rating: Both OptiFuse substitutes are rated for 50V DC, exceeding the original 32V DC specification. This higher rating provides enhanced margin in DC applications while maintaining full compatibility with 32V DC circuits.

Inventory Availability: CBW57-ES-4A maintains 2895 units in stock, while CBW57-EJ-4A maintains 1273 units. The CLB-043-11ANN-B-A has 1152 units available.

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

Frequently Asked Questions (FAQ)

Q: Can CBW57-ES-4A or CBW57-EJ-4A replace CLB-043-11ANN-B-A in existing designs?

A: Both OptiFuse parts match the critical electrical parameters: 4A current rating, 250V AC, and thermal breaker type with push-to-reset actuation. The 50V DC rating in the substitutes exceeds the original 32V DC specification, providing compatibility in DC applications. Panel-mount configuration and single-pole design are identical. Certification differences should be evaluated against application requirements.

Q: What is the difference between CBW57-ES-4A and CBW57-EJ-4A?

A: Both parts share identical electrical specifications: 4A, 250V AC, 50V DC, thermal type, push-to-reset actuation, and panel-mount configuration. The primary difference is inventory availability, with CBW57-ES-4A maintaining higher stock levels (2895 units versus 1273 units).

Q: Are the OptiFuse substitutes RoHS compliant?

A: Both CBW57-ES-4A and CBW57-EJ-4A are ROHS3 compliant, matching the compliance status of the original CLB-043-11ANN-B-A.

Q: Does the higher DC voltage rating of the substitutes affect circuit operation?

A: No. A higher voltage rating indicates the component can safely operate at higher voltages. In circuits operating at 32V DC or lower, the 50V DC rated substitutes function identically to the original 32V DC rated part.

Q: What certifications should I verify for my application?

A: The CLB-043-11ANN-B-A carries CE, cUL, TUV, UL1077, and UL1500 approvals. The OptiFuse substitutes carry cURus, IP 40, SAE J1171, UL 1077, and UL 1500 approvals. Applications requiring specific regional certifications should confirm that substitute part certifications meet system and regulatory requirements.

Q: Are there packaging considerations when switching between manufacturers?

A: All three parts are supplied in bulk packaging. Physical dimensions and panel-mount interface specifications are not provided in the parameter set. Mechanical fit verification is required when substituting between manufacturers.