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

Part Overview

The CLB-103-12CNN-B-A 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 component is ROHS3 compliant and REACH unaffected. Substitute parts are identified to provide alternative sourcing options when the primary part number is unavailable or when inventory requirements necessitate alternative configurations from qualified manufacturers.

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

Substitute Part Grouping Explanation

Substitute parts for the CLB-103-12CNN-B-A are qualified based on electrical and mechanical parameter equivalence. All identified substitutes share the following critical parameters with the main part:

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

All substitute parts are manufactured by OptiFuse under the CBW57 series. The DC voltage rating for substitute parts is 50V, which exceeds the 32V DC specification of the main part and is therefore compatible for applications requiring the CLB-103-12CNN-B-A. All substitutes maintain active product status and hold equivalent regulatory approvals including cURus, UL 1077, and UL 1500 certifications.

Parameter Comparison

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

Engineering Selection Recommendations

All listed substitute parts maintain active product status and hold regulatory compliance with cURus, UL 1077, and UL 1500 standards. The CBW57 series from OptiFuse provides direct functional equivalence to the CLB-103-12CNN-B-A across all critical electrical and mechanical parameters. The elevated DC voltage rating of 50V in substitute parts provides enhanced capability for applications operating at or below 32V DC.

All substitute parts are ROHS3 compliant and REACH unaffected, matching the environmental compliance profile of the main part. Moisture Sensitivity Level (MSL) rating of 1 (Unlimited) for OptiFuse substitutes indicates no moisture-related handling restrictions during storage or assembly.

Selection among the CBW57 variants should be based on specific application requirements and available inventory. The CBW57-PS-10A-5X variant offers the highest inventory availability at 5,818 pieces. The CBW57-PS-10A base variant provides 4,730 pieces in stock. All variants are functionally interchangeable for applications requiring 10A thermal circuit protection at 250V AC.

Frequently Asked Questions (FAQ)

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

A: Yes. All CBW57 variants listed share identical current rating (10A), AC voltage rating (250V), mounting type (panel mount), actuator type (push to reset), and pole configuration (single pole). The 50V DC rating of CBW57 parts exceeds the 32V DC specification of the CLB-103-12CNN-B-A and is compatible for equivalent applications.

Q: What is the difference between the various CBW57 part numbers?

A: The CBW57 series variants differ in connector or terminal configurations indicated by the suffix codes (EJ, EL4, ES, PB, PF, PL, PS). All variants maintain identical electrical specifications for current, voltage, and thermal protection characteristics. Selection should be based on mechanical interface requirements and available inventory.

Q: Are all substitute parts ROHS3 compliant?

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

Q: What regulatory approvals do the substitute parts hold?

A: CBW57 series parts hold cURus, IP 40, SAE J1171, UL 1077, and UL 1500 approvals. The main part CLB-103-12CNN-B-A holds CE, cUL, TUV, UL1077, and UL1500 approvals. Both product lines meet UL 1077 and UL 1500 standards for thermal circuit breaker applications.

Q: Is there a difference in moisture sensitivity between the main part and substitutes?

A: OptiFuse CBW57 substitutes specify Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture-related handling restrictions. The main part CLB-103-12CNN-B-A does not specify an MSL rating in the provided data.

Q: Which substitute part has the highest inventory availability?

A: CBW57-PS-10A-5X offers the highest inventory with 5,818 pieces in stock, followed by CBW57-PS-10A with 4,730 pieces.

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