CLB-103-12CNN-B-H Equivalent & Substitute Parts

Part Overview

The CLB-103-12CNN-B-H 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 is designed for overcurrent protection in industrial and commercial applications. The part maintains 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 suppliers.

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

Substitute parts for the CLB-103-12CNN-B-H are qualified based on electrical and mechanical parameter equivalence. All substitute parts are from the OptiFuse CBW57 series and maintain the following critical parameters:

Matching Parameters:

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

Parameter Variance:

Voltage Rating - DC: Substitute parts are rated for 50V DC, compared to the main part's 32V DC rating. This represents an uprated specification suitable for higher DC voltage applications.

All substitute parts carry active product status and maintain compliance with industry standards including cURus, IP 40, SAE J1171, UL 1077, and UL 1500 certifications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Current Rating (Amps)	Voltage Rating - AC	Voltage Rating - DC	Mounting Type	Breaker Type	Actuator Type	Number of Poles	RoHS Status	Product Status
CLB-103-12CNN-B-H	Carling Technologies	10A	250V	32V	Panel Mount	Thermal	Push to Reset	1	ROHS3 Compliant	Active
CBW57-EJ-10A	OptiFuse	10A	250V	50V	Panel Mount	Thermal	Push to Reset	1	ROHS3 Compliant	Active
CBW57-EL4-10A	OptiFuse	10A	250V	50V	Panel Mount	Thermal	Push to Reset	1	ROHS3 Compliant	Active
CBW57-ES-10A-5H	OptiFuse	10A	250V	50V	Panel Mount	Thermal	Push to Reset	1	ROHS3 Compliant	Active
CBW57-PB-10A-5X	OptiFuse	10A	250V	50V	Panel Mount	Thermal	Push to Reset	1	ROHS3 Compliant	Active
CBW57-PB-10A-X	OptiFuse	10A	250V	50V	Panel Mount	Thermal	Push to Reset	1	ROHS3 Compliant	Active
CBW57-PF-10A-5X	OptiFuse	10A	250V	50V	Panel Mount	Thermal	Push to Reset	1	ROHS3 Compliant	Active
CBW57-PL-10A-5X	OptiFuse	10A	250V	50V	Panel Mount	Thermal	Push to Reset	1	ROHS3 Compliant	Active
CBW57-PS-10A	OptiFuse	10A	250V	50V	Panel Mount	Thermal	Push to Reset	1	ROHS3 Compliant	Active
CBW57-PS-10A-1X	OptiFuse	10A	250V	50V	Panel Mount	Thermal	Push to Reset	1	ROHS3 Compliant	Active
CBW57-PS-10A-5X	OptiFuse	10A	250V	50V	Panel Mount	Thermal	Push to Reset	1	ROHS3 Compliant	Active

Engineering Selection Recommendations

All listed substitute parts maintain functional equivalence to the CLB-103-12CNN-B-H within the specified electrical and mechanical parameters. The OptiFuse CBW57 series parts are active products with full compliance to industry standards including UL 1077 and UL 1500, matching the regulatory framework of the primary part.

The primary distinction between the main part and substitute options is the DC voltage rating. The CLB-103-12CNN-B-H is rated for 32V DC, while all OptiFuse CBW57 substitutes are rated for 50V DC. This uprated DC specification in the substitute parts provides enhanced capability for higher DC voltage applications while maintaining identical AC voltage performance at 250V.

All substitute parts carry ROHS3 compliance and REACH Unaffected status, ensuring environmental and regulatory alignment with the original part. Selection among the substitute options should be based on specific connector or terminal configurations indicated by the part number suffix, as these designations reflect mechanical interface variations within the CBW57 series.

Frequently Asked Questions (FAQ)

Q: Can CBW57 series parts directly replace the CLB-103-12CNN-B-H?

A: Yes. All listed CBW57 parts are functionally equivalent for applications requiring 10A thermal circuit protection at 250V AC. The CBW57 parts feature identical current rating, AC voltage rating, mounting type, actuator mechanism, and pole configuration. The higher 50V DC rating in CBW57 parts is compatible with applications originally specified for 32V DC operation.

Q: What do the suffixes in CBW57 part numbers indicate?

A: The suffixes in CBW57 part numbers (such as -PS, -PF, -PL, -PB, -EJ, -EL4, -ES) designate specific connector or terminal configurations. These mechanical interface variations do not affect the electrical performance parameters. Selection should be based on the specific terminal type required for your application.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed OptiFuse CBW57 substitute parts are ROHS3 compliant and REACH Unaffected, matching the environmental compliance status of the CLB-103-12CNN-B-H.

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. These standards align with the regulatory requirements of the original Carling Technologies part.

Q: Is the 50V DC rating of CBW57 parts suitable for 32V DC applications?

A: Yes. The 50V DC rating represents an uprated specification. Parts rated for higher voltage are suitable for lower voltage applications within their rated range. The CBW57 parts are therefore compatible with any application originally specified for the CLB-103-12CNN-B-H's 32V DC rating.

Q: What inventory levels are available for substitute parts?

A: Inventory availability varies by specific part number. CBW57-PS-10A-5X maintains the highest inventory at 5,818 pieces. Other variants range from 701 to 4,730 pieces. Specific availability should be confirmed at the time of procurement.

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