CLB-183-12C2N-B-A Circuit Breaker Equivalent & Substitute Parts

Part Overview

The CLB-183-12C2N-B-A is an active thermal circuit breaker manufactured by Carling Technologies, rated for 18A at 250V AC and 32V DC. This single-pole, panel-mount device features push-to-reset actuation and holds multiple international approvals including CE, cUL, TUV, UL1077, and UL1500 certifications. The part is ROHS3 compliant and REACH unaffected. Identification of equivalent substitute parts becomes necessary when managing inventory constraints, supply chain disruptions, or when alternative sourcing options are required while maintaining identical electrical and mechanical performance specifications.

Substiute Parts

CLB-183-12C2N-B-A

Carling TechnologiesIn Stock: 1153CLB-183-12C2N-B-A Datasheet

Current PartRFQ

CBW57-HS-18A

OptiFuseIn Stock: 1302CBW57-HS-18A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CLB-183-12C2N-B-A is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Breaker Type: Thermal
• Current Rating: 18A
• Voltage Rating - AC: 250V
• Mounting Type: Panel Mount
• Actuator Type: Push to Reset
• Number of Poles: 1

Allowable Variance:

• Voltage Rating - DC: The substitute part (CBW57-HS-18A) is rated for 50V DC, which exceeds the minimum requirement of 32V DC. Higher DC voltage ratings provide expanded application compatibility without compromising performance in circuits rated at or below 32V DC.

The CBW57-HS-18A from OptiFuse meets all mandatory parameters and maintains functional equivalence with the CLB-183-12C2N-B-A across thermal protection characteristics, panel-mount installation, and reset functionality.

Parameter Comparison

Engineering Selection Recommendations

Both the CLB-183-12C2N-B-A and CBW57-HS-18A are active products with confirmed inventory availability. The CLB-183-12C2N-B-A carries approvals from CE, cUL, TUV, UL1077, and UL1500. The CBW57-HS-18A carries approvals from cURus, IP 40, SAE J1171, UL 1077, and UL 1500. Both parts maintain ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements.

Selection between these parts should be based on application-specific certification requirements. Applications requiring CE or TUV certification must use the CLB-183-12C2N-B-A. Applications requiring SAE J1171 compliance or IP 40 rating must use the CBW57-HS-18A. For applications requiring only UL 1077 and UL 1500 certifications, either part is suitable. The elevated DC voltage rating of the CBW57-HS-18A (50V versus 32V) provides additional design margin in DC applications without affecting AC performance.

Frequently Asked Questions (FAQ)

Q: Can the CBW57-HS-18A replace the CLB-183-12C2N-B-A in all applications?

A: The CBW57-HS-18A is functionally equivalent for thermal protection, current limiting, and panel-mount installation. However, certification requirements must be verified. Applications requiring CE or TUV certification must retain the CLB-183-12C2N-B-A. Applications requiring SAE J1171 compliance must use the CBW57-HS-18A.

Q: What does the higher DC voltage rating (50V versus 32V) on the CBW57-HS-18A mean?

A: The 50V DC rating indicates the maximum DC voltage the part can safely interrupt. This higher rating is compatible with all applications designed for 32V DC operation and below. The part will function identically in circuits rated at 32V DC or lower.

Q: Are both parts available in the same packaging?

A: The CLB-183-12C2N-B-A is supplied in standard packaging. The CBW57-HS-18A is supplied in bulk packaging. Packaging differences do not affect electrical or mechanical performance.

Q: Do both parts have the same reset mechanism?

A: Yes. Both parts feature push-to-reset actuation and are single-pole thermal breakers with identical functional operation.

Q: What is the Moisture Sensitivity Level (MSL) for the CLB-183-12C2N-B-A?

A: The MSL specification is provided only for the CBW57-HS-18A (MSL 1 - Unlimited). The CLB-183-12C2N-B-A MSL specification is not included in the provided technical data.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the CLB-183-12C2N-B-A and CBW57-HS-18A are ROHS3 compliant and REACH unaffected.