CLB-253-12CNN-W-D Equivalent & Substitute Parts

Part Overview

The CLB-253-12CNN-W-D is a thermal circuit breaker manufactured by Carling Technologies, rated for 25A at 250V AC and 32V DC with push-to-reset panel mount actuation. This single-pole breaker is designed for overcurrent protection in industrial and commercial applications and maintains Active product status with full compliance to CE, cUL, TUV, UL1077, and UL1500 standards.

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across manufacturers. The CLB-253-12CNN-W-D can be replaced with functionally equivalent thermal circuit breakers that share identical current ratings, AC voltage ratings, mounting configurations, and actuator types, while accommodating minor variations in DC voltage ratings within acceptable operational ranges.

Substiute Parts

CLB-253-12CNN-W-D

Carling TechnologiesIn Stock: 1125CLB-253-12CNN-W-D 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-253-12CNN-W-D are qualified based on the following critical parameters that must remain constant:

Mandatory Matching Parameters:

• Current Rating: 25A
• Voltage Rating - AC: 250V
• Mounting Type: Panel Mount
• Breaker Type: Thermal
• Actuator Type: Push to Reset
• Number of Poles: 1
• Illumination: None

Allowable Variation:

• Voltage Rating - DC: The CLB-253-12CNN-W-D operates at 32V DC. Substitute parts from the OptiFuse CBW57 series operate at 50V DC. This represents an upward voltage capability that maintains compatibility in applications where the original 32V DC specification is required, as the substitute can safely operate at or below the original rating.

All substitute parts identified are manufactured by OptiFuse under the CBW57 series designation and maintain Active product status with ROHS3 compliance and equivalent regulatory approvals.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain Active product status and ROHS3 compliance, ensuring continued availability and environmental regulatory adherence. The OptiFuse CBW57 series substitutes carry regulatory approvals including cURus, IP 40, SAE J1171, UL 1077, and UL 1500, which provide equivalent or enhanced certification coverage compared to the original CLB-253-12CNN-W-D.

The DC voltage rating differential (32V original versus 50V substitutes) represents an upward capability margin. OptiFuse CBW57 series parts are rated for 50V DC operation, which encompasses the original 32V DC requirement. This characteristic ensures the substitute parts function correctly in applications designed for the original 32V DC specification.

Inventory availability across all substitute options ranges from 764 to 1681 pieces, supporting both immediate procurement and long-term supply chain planning. Selection among the seven available CBW57 variants should be based on specific connector or terminal configurations required by the application, as all electrical and mechanical parameters remain equivalent.

Frequently Asked Questions (FAQ)

Q: Can CBW57 series parts directly replace the CLB-253-12CNN-W-D in existing installations?

A: Yes. All CBW57 substitute parts share identical current ratings (25A), AC voltage ratings (250V), mounting configurations (panel mount), actuator types (push to reset), and pole counts (1). The 50V DC rating of CBW57 parts exceeds the original 32V DC specification, ensuring compatibility in applications designed for the CLB-253-12CNN-W-D.

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 variations in connector types, terminal configurations, or packaging specifications. All variants maintain identical electrical parameters and thermal protection characteristics. Selection should be based on the specific terminal or connector requirements of the application.

Q: Are the regulatory approvals equivalent between Carling CLB and OptiFuse CBW57 series?

A: Both series carry UL 1077 and UL 1500 certifications. The CBW57 series additionally includes cURus, IP 40, and SAE J1171 approvals. These certifications confirm compliance with industrial circuit breaker standards and do not introduce incompatibility.

Q: Does the higher DC voltage rating of CBW57 parts affect performance in 32V DC applications?

A: No. A component rated for 50V DC operates safely at 32V DC. The higher rating provides additional safety margin and does not alter the thermal protection characteristics or response time of the breaker.

Q: What packaging considerations apply when selecting among the seven CBW57 variants?

A: All variants are supplied in Bulk packaging. Inventory quantities vary by part number (ranging from 764 to 1681 pieces). Selection should account for connector type compatibility with the panel or equipment into which the breaker will be installed.

Q: Can CBW57 parts be used in applications where the original CLB-253-12CNN-W-D is specified?

A: Yes. The electrical and mechanical parameters are equivalent. The CBW57 series maintains the same 25A current protection, 250V AC rating, panel mount configuration, and push-to-reset actuation. Connector type compatibility should be confirmed based on the specific application requirements.