CLB-253-11B2B-W-A Equivalent & Substitute Parts

Part Overview

The CLB-253-11B2B-W-A is a thermal circuit breaker manufactured by Carling Technologies, rated for 25A at 250V AC and 32V DC with push-to-reset actuation and panel mount configuration. This component is classified as Active product status with full compliance to CE, cUL, TUV, UL1077, and UL1500 standards. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when inventory requirements necessitate alternative manufacturers while maintaining equivalent electrical and mechanical specifications.

Substiute Parts

CLB-253-11B2B-W-A

Carling TechnologiesIn Stock: 1264CLB-253-11B2B-W-A Datasheet

Current PartRFQ

CBW57-EJ-25A

OptiFuseIn Stock: 1275CBW57-EJ-25A Datasheet

Parametric EquivalentRFQ

CBW57-ES-25A

OptiFuseIn Stock: 1624CBW57-ES-25A Datasheet

Parametric EquivalentRFQ

CBW57-ES-25A-5H

OptiFuseIn Stock: 1272CBW57-ES-25A-5H Datasheet

Parametric EquivalentRFQ

CBW57-PB-25A-5X

OptiFuseIn Stock: 834CBW57-PB-25A-5X Datasheet

Parametric EquivalentRFQ

CBW57-PS-25A

OptiFuseIn Stock: 1711CBW57-PS-25A Datasheet

Parametric EquivalentRFQ

CBW57-PS-25A-5X

OptiFuseIn Stock: 1263CBW57-PS-25A-5X Datasheet

Parametric EquivalentRFQ

CBW57-PS-25A-5XD

OptiFuseIn Stock: 1024CBW57-PS-25A-5XD Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CLB-253-11B2B-W-A are qualified based on the following critical parameters that determine functional equivalence:

Electrical Parameters:

• Current Rating: 25A (exact match required)
• Voltage Rating - AC: 250V (exact match required)
• Voltage Rating - DC: 50V (substitute parts rated at 50V DC exceed the 32V DC requirement and remain compatible)

Mechanical Parameters:

• Breaker Type: Thermal (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)

Compliance Parameters:

• RoHS3 Compliant (all substitutes meet this requirement)
• Approval Agencies: All substitute parts carry UL 1077 and UL 1500 certifications, meeting the primary approval standards

All identified substitute parts are manufactured by OptiFuse under the CBW57 series and maintain identical electrical performance characteristics with the main part while offering alternative sourcing channels.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain Active product status and carry ROHS3 compliance certification. The OptiFuse CBW57 series substitutes provide equivalent thermal circuit breaker functionality with the following considerations:

Voltage Rating Differential: Substitute parts are rated for 50V DC compared to the main part's 32V DC rating. This higher DC voltage rating does not restrict application in circuits operating at or below 32V DC and provides additional design margin in DC applications.

Certification Alignment: All substitute parts carry UL 1077 and UL 1500 certifications, which align with the primary approval standards of the CLB-253-11B2B-W-A. The OptiFuse parts additionally carry cURus and SAE J1171 certifications with IP 40 rating.

Inventory Availability: Substitute parts demonstrate consistent inventory levels ranging from 764 to 1681 pieces, providing reliable sourcing alternatives to the main part's 1167-piece inventory.

Part Number Variants: The CBW57 series includes multiple part number variants (EJ, ES, ES-5H, PB-5X, PS, PS-5X, PS-5XD) representing different connector or terminal configurations. Selection among these variants depends on specific application terminal requirements.

Frequently Asked Questions (FAQ)

Q: Can CBW57 series parts directly replace CLB-253-11B2B-W-A in existing designs?

A: Yes. All CBW57 substitute parts maintain identical current rating (25A), AC voltage rating (250V), mounting type (panel mount), actuator type (push to reset), and pole configuration (1 pole). The higher DC voltage rating (50V versus 32V) does not restrict compatibility in applications operating at 32V DC or lower.

Q: What is the significance of the different CBW57 part number suffixes (EJ, ES, ES-5H, PB-5X, PS, PS-5X, PS-5XD)?

A: The suffixes denote different terminal or connector configurations within the CBW57 series. All variants maintain identical electrical specifications (25A, 250V AC, 50V DC, thermal, push to reset). Selection of the appropriate suffix depends on the specific terminal interface requirements of the application circuit board or wiring harness.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified CBW57 substitute parts carry ROHS3 compliance certification, matching the environmental compliance status of the CLB-253-11B2B-W-A.

Q: What certifications do the substitute parts carry?

A: OptiFuse CBW57 series parts carry cURus, IP 40, SAE J1171, UL 1077, and UL 1500 certifications. The main part carries CE, cUL, TUV, UL1077, and UL1500 certifications. Both part families meet UL 1077 and UL 1500 standards, which are the primary thermal circuit breaker performance standards.

Q: Is there a difference in thermal response between the main part and substitute parts?

A: All parts are classified as thermal circuit breakers with identical current ratings (25A). Thermal response characteristics are determined by the current rating and breaker type, which are identical across all parts. Specific thermal trip curves are not provided in the available technical parameters.

Q: Can substitute parts be mixed in the same assembly?

A: Yes. All substitute parts maintain identical electrical and mechanical specifications, allowing interchangeability within the same assembly. However, terminal configuration differences (indicated by part number suffixes) must be matched to the specific application requirements.

Q: What is the Moisture Sensitivity Level (MSL) of the substitute parts?

A: All OptiFuse CBW57 substitute parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage or handling.