CLB-103-11ANN-W-F/10 Equivalent & Substitute Parts

Part Overview

The CLB-103-11ANN-W-F/10 is a thermal circuit breaker manufactured by Carling Technologies, rated for 10A at 250V AC and 32V DC. This single-pole, panel-mount device features push-to-reset actuation and holds active product status with full compliance to CE, cUL, TUV, UL1077, and UL1500 standards. The device is RoHS3 compliant and REACH unaffected.

Substitute parts become necessary when the primary part experiences extended lead times, inventory constraints, or when design flexibility permits selection from qualified alternatives that meet identical electrical and mechanical specifications.

Key Parameters

Parameter	Value
Breaker Type	Thermal
Current Rating	10A
Voltage Rating - AC	250V
Voltage Rating - DC	32V
Mounting Type	Panel Mount
Actuator Type	Push to Reset
Number of Poles	1
Illumination	None
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the CLB-103-11ANN-W-F/10 is determined by strict equivalence across the following parameters:

Critical Matching Parameters:

Current Rating: 10A (exact match required)
Voltage Rating - AC: 250V (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)
Breaker Type: Thermal (exact match required)

Acceptable Variance:

Voltage Rating - DC: The main part specifies 32V DC. Substitute parts rated at 50V DC are acceptable as this represents a higher voltage capability and maintains backward compatibility in applications requiring 32V DC operation.

All substitute parts listed are manufactured by OptiFuse under the CBW57 series and maintain identical AC voltage, current, mounting, actuation, and pole configuration. The DC voltage rating variance (50V versus 32V) does not restrict substitution as the higher rating accommodates the original specification.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Current Rating (A)	Voltage AC (V)	Voltage DC (V)	Mounting Type	Actuator Type	Poles	RoHS Status
CLB-103-11ANN-W-F/10	Carling Technologies	10	250	32	Panel Mount	Push to Reset	1	ROHS3 Compliant
CBW57-EJ-10A	OptiFuse	10	250	50	Panel Mount	Push to Reset	1	ROHS3 Compliant
CBW57-EL4-10A	OptiFuse	10	250	50	Panel Mount	Push to Reset	1	ROHS3 Compliant
CBW57-ES-10A-5H	OptiFuse	10	250	50	Panel Mount	Push to Reset	1	ROHS3 Compliant
CBW57-PB-10A-5X	OptiFuse	10	250	50	Panel Mount	Push to Reset	1	ROHS3 Compliant
CBW57-PB-10A-X	OptiFuse	10	250	50	Panel Mount	Push to Reset	1	ROHS3 Compliant
CBW57-PF-10A-5X	OptiFuse	10	250	50	Panel Mount	Push to Reset	1	ROHS3 Compliant
CBW57-PL-10A-5X	OptiFuse	10	250	50	Panel Mount	Push to Reset	1	ROHS3 Compliant
CBW57-PS-10A	OptiFuse	10	250	50	Panel Mount	Push to Reset	1	ROHS3 Compliant
CBW57-PS-10A-1X	OptiFuse	10	250	50	Panel Mount	Push to Reset	1	ROHS3 Compliant
CBW57-PS-10A-5X	OptiFuse	10	250	50	Panel Mount	Push to Reset	1	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts maintain active product status and comply with RoHS3 requirements. The OptiFuse CBW57 series alternatives carry approval certifications including cURus, IP 40, SAE J1171, UL 1077, and UL 1500, which overlap substantially with the original part's certification profile (CE, cUL, TUV, UL1077, UL1500).

The CBW57-PS-10A variant offers the highest inventory availability at 4,730 pieces, followed by CBW57-PS-10A-5X at 5,818 pieces. Both maintain identical electrical specifications and panel-mount configuration. The CBW57-ES-10A-5H provides 3,044 units in stock.

All substitute parts are classified as REACH Unaffected and carry EAR99 ECCN designation, matching the regulatory profile of the original CLB-103-11ANN-W-F/10. Moisture Sensitivity Level (MSL) for all OptiFuse alternatives is rated at 1 (Unlimited), indicating no moisture-related handling restrictions.

Selection among the CBW57 series variants should be based on specific connector or terminal requirements indicated by the part number suffix, as these designations reflect mechanical interface variations while maintaining electrical equivalence.

Frequently Asked Questions (FAQ)

Q: Can CBW57 series parts directly replace the CLB-103-11ANN-W-F/10 in existing designs?

A: Yes. All listed CBW57 variants match the critical electrical parameters: 10A current rating, 250V AC voltage, panel-mount configuration, push-to-reset actuation, and single-pole design. The 50V DC rating of CBW57 parts exceeds the 32V DC specification of the original part, ensuring compatibility in applications operating at or below 32V DC.

Q: What is the significance of the part number suffixes in the CBW57 series?

A: The suffixes (such as -PS, -PF, -PL, -EJ, -EL4, -ES, -PB) denote mechanical interface variations including terminal types, connector configurations, and mounting bracket styles. These variations do not affect electrical performance or substitution eligibility when the core electrical specifications remain identical.

Q: Are there compliance differences between the CLB-103-11ANN-W-F/10 and CBW57 alternatives?

A: Both the original part and all substitutes are RoHS3 compliant and REACH unaffected. The original part carries CE, cUL, TUV, UL1077, and UL1500 certifications. CBW57 alternatives carry cURus, IP 40, SAE J1171, UL 1077, and UL 1500 certifications. The UL 1077 and UL 1500 standards are common to both, confirming thermal circuit breaker performance equivalence.

Q: Which CBW57 variant should be selected for new procurement?

A: CBW57-PS-10A-5X is recommended for new designs due to highest inventory availability (5,818 pieces) and established supply chain presence. CBW57-PS-10A offers the second-highest availability (4,730 pieces). Selection between these two should be based on specific terminal or connector requirements indicated by the -5X suffix designation.

Q: Is the higher DC voltage rating of CBW57 parts a concern for 32V DC applications?

A: No. A 50V DC rating provides additional safety margin and is fully backward compatible with applications specified for 32V DC operation. The higher rating does not introduce any functional or reliability issues in lower-voltage applications.

Q: What is the Moisture Sensitivity Level (MSL) significance for these parts?

A: All CBW57 substitutes carry MSL 1 (Unlimited), indicating no moisture-related storage or handling restrictions. This classification simplifies inventory management and eliminates the need for specialized desiccant packaging or shelf-life tracking.

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