CLB-253-11ANN-B-F Equivalent & Substitute Parts

Part Overview

The CLB-253-11ANN-B-F 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 and carries multiple regulatory approvals including CE, cUL, TUV, UL1077, and UL1500 certifications. The device is ROHS3 compliant and REACH unaffected.

Substitute parts are identified when equivalent electrical and mechanical parameters align with the main component specifications, enabling direct replacement in applications where the core functional requirements remain constant.

Key Parameters

Parameter	Value
Breaker Type	Thermal
Current Rating	25A
Voltage Rating - AC	250V
Voltage Rating - DC	32V
Actuator Type	Push to Reset
Mounting Type	Panel Mount
Number of Poles	1
Illumination	None
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the CLB-253-11ANN-B-F are identified from the OptiFuse CBW57 series based on the following critical parameters:

Matching Parameters:

Current Rating: 25A
Voltage Rating - AC: 250V
Breaker Type: Thermal
Actuator Type: Push to Reset
Mounting Type: Panel Mount
Number of Poles: 1
Illumination: None
RoHS Status: ROHS3 Compliant

Parameter Variance:

Voltage Rating - DC: Substitute parts are rated 50V DC, compared to the main part's 32V DC specification. This represents an increased DC voltage capability.

All substitute parts maintain Active product status and carry regulatory approvals compatible with the main component's application requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Current Rating (A)	Voltage AC (V)	Voltage DC (V)	Breaker Type	Actuator Type	Mounting Type	Poles	Product Status	RoHS Status
CLB-253-11ANN-B-F	Carling Technologies	25	250	32	Thermal	Push to Reset	Panel Mount	1	Active	ROHS3 Compliant
CBW57-EJ-25A	OptiFuse	25	250	50	Thermal	Push to Reset	Panel Mount	1	Active	ROHS3 Compliant
CBW57-ES-25A	OptiFuse	25	250	50	Thermal	Push to Reset	Panel Mount	1	Active	ROHS3 Compliant
CBW57-ES-25A-5H	OptiFuse	25	250	50	Thermal	Push to Reset	Panel Mount	1	Active	ROHS3 Compliant
CBW57-PB-25A-5X	OptiFuse	25	250	50	Thermal	Push to Reset	Panel Mount	1	Active	ROHS3 Compliant
CBW57-PS-25A	OptiFuse	25	250	50	Thermal	Push to Reset	Panel Mount	1	Active	ROHS3 Compliant
CBW57-PS-25A-5X	OptiFuse	25	250	50	Thermal	Push to Reset	Panel Mount	1	Active	ROHS3 Compliant
CBW57-PS-25A-5XD	OptiFuse	25	250	50	Thermal	Push to Reset	Panel Mount	1	Active	ROHS3 Compliant

Engineering Selection Recommendations

All identified substitute parts from the OptiFuse CBW57 series maintain electrical and mechanical compatibility with the CLB-253-11ANN-B-F across critical parameters including current rating, AC voltage rating, breaker type, actuator mechanism, and mounting configuration.

The substitute parts carry regulatory approvals including cURus, IP 40, SAE J1171, UL 1077, and UL 1500 certifications. These certifications align with the approval framework of the main component and support equivalent application deployment.

All substitute parts are classified as Active product status with ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), indicating stable long-term availability and environmental compliance.

The DC voltage rating differential (50V DC for substitutes versus 32V DC for the main part) represents an increased capability margin and does not restrict substitution in applications operating at or below the main part's 32V DC specification.

Frequently Asked Questions (FAQ)

Q: What determines if a circuit breaker can substitute for the CLB-253-11ANN-B-F?

A: Substitution is based on matching the following parameters: 25A current rating, 250V AC voltage rating, thermal breaker type, push-to-reset actuation, panel mount configuration, single-pole design, and absence of illumination. All identified substitutes meet these criteria.

Q: Why do the substitute parts have a higher DC voltage rating (50V versus 32V)?

A: The substitute parts are rated for 50V DC, which exceeds the main part's 32V DC specification. This represents an increased voltage capability and does not prevent substitution in applications operating within the main part's 32V DC limit.

Q: Are the OptiFuse CBW57 series parts directly interchangeable with the Carling Technologies CLB-253-11ANN-B-F?

A: The substitute parts share identical electrical ratings for current and AC voltage, matching breaker type, actuator mechanism, mounting style, and pole configuration. Physical form factor and terminal configuration must be verified for specific panel mount applications.

Q: What regulatory approvals apply to the substitute parts?

A: The OptiFuse CBW57 series substitutes carry cURus, IP 40, SAE J1171, UL 1077, and UL 1500 approvals. These certifications support equivalent application requirements and regulatory compliance frameworks.

Q: Are there inventory considerations when selecting a substitute part?

A: Substitute parts from the CBW57 series show varying inventory levels. CBW57-PS-25A maintains the highest inventory at 1681 pieces, while CBW57-PB-25A-5X maintains 764 pieces. Inventory status should be confirmed at the time of component selection.

Q: What is the difference between the various CBW57 part number suffixes?

A: The suffixes (EJ, ES, ES-5H, PB-5X, PS, PS-5X, PS-5XD) indicate internal design variations and packaging configurations within the CBW57 series. All variants maintain the specified 25A, 250V AC electrical ratings and thermal breaker functionality.

Q: Is RoHS3 compliance maintained across all substitute options?

A: All identified substitute parts are ROHS3 compliant, matching the environmental compliance status of the main component CLB-253-11ANN-B-F.

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