CLB-053-12CNN-W-D Equivalent & Substitute Parts

Part Overview

The CLB-053-12CNN-W-D is a thermal circuit breaker manufactured by Carling Technologies, rated for 5A 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 address inventory availability, extended lead times, or specific application requirements while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Breaker Type	Thermal
Current Rating	5A
Voltage Rating - AC	250V
Voltage Rating - DC	32V
Mounting Type	Panel Mount
Actuator Type	Push to Reset
Number of Poles	1
Product Status	Active
RoHS Compliance	RoHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the CLB-053-12CNN-W-D are qualified based on strict electrical and mechanical parameter alignment. All substitute parts are manufactured by OptiFuse under the CBW57 series and match the following critical parameters:

Matching Parameters:

Current Rating: 5A
Voltage Rating - AC: 250V
Mounting Type: Panel Mount
Breaker Type: Thermal
Actuator Type: Push to Reset
Number of Poles: 1
Product Status: Active
RoHS3 Compliance: Yes

Parameter Variance: The substitute parts operate at 50V DC, compared to the main part's 32V DC rating. This represents a higher DC voltage capability and does not restrict substitution in applications requiring 32V DC operation. All substitute parts carry equivalent or expanded approval certifications including cURus, IP 40, SAE J1171, UL 1077, and UL 1500.

Parameter Comparison

Parameter	CLB-053-12CNN-W-D	CBW57-EJ-5A	CBW57-EL4-5A	CBW57-ES-5A	CBW57-PF-5A-5X	CBW57-PL-5A-5X	CBW57-PS-5A	CBW57-PS-5A-1X	CBW57-PS-5A-5X	CBW57-PS-5A-W
Manufacturer	Carling Technologies	OptiFuse	OptiFuse	OptiFuse	OptiFuse	OptiFuse	OptiFuse	OptiFuse	OptiFuse	OptiFuse
Breaker Type	Thermal	Thermal	Thermal	Thermal	Thermal	Thermal	Thermal	Thermal	Thermal	Thermal
Current Rating (Amps)	5A	5A	5A	5A	5A	5A	5A	5A	5A	5A
Voltage Rating - AC	250V	250V	250V	250V	250V	250V	250V	250V	250V	250V
Voltage Rating - DC	32V	50V	50V	50V	50V	50V	50V	50V	50V	50V
Mounting Type	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount
Actuator Type	Push to Reset	Push to Reset	Push to Reset	Push to Reset	Push to Reset	Push to Reset	Push to Reset	Push to Reset	Push to Reset	Push to Reset
Number of Poles	1	1	1	1	1	1	1	1	1	1
Product Status	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant
Inventory (Pcs)	862	1007	1691	5629	798	1056	2137	1422	1554	2112

Engineering Selection Recommendations

All listed substitute parts maintain active product status and full RoHS3 compliance. The CBW57 series from OptiFuse provides equivalent thermal circuit breaker functionality with identical electrical ratings for AC operation and enhanced DC voltage capability.

Certification Alignment: The main part CLB-053-12CNN-W-D carries UL1077 and UL1500 certifications. All substitute parts carry cURus, UL 1077, and UL 1500 certifications, with additional SAE J1171 and IP 40 ratings. This expanded certification profile supports broader application compatibility.

Inventory Considerations: CBW57-ES-5A offers the highest inventory level at 5,629 pieces. CBW57-PS-5A and CBW57-PS-5A-W each maintain inventory above 2,100 pieces, providing reliable supply for high-volume requirements.

DC Voltage Capability: All substitute parts are rated for 50V DC operation, exceeding the 32V DC requirement of the main part. This enhanced rating does not restrict use in 32V DC applications and provides additional design margin for systems operating near the original 32V DC specification.

Frequently Asked Questions (FAQ)

Q: Can CBW57 series parts directly replace CLB-053-12CNN-W-D in existing designs?

A: Yes. All CBW57 substitute parts match the critical electrical parameters: 5A current rating, 250V AC voltage rating, single-pole configuration, thermal breaker type, and push-to-reset actuation. Panel-mount mechanical compatibility is identical. The 50V DC rating of CBW57 parts exceeds the 32V DC requirement, supporting direct substitution in applications operating at or below 32V DC.

Q: What is the significance of the DC voltage difference between the main part and substitutes?

A: The main part CLB-053-12CNN-W-D is rated for 32V DC. All CBW57 substitute parts are rated for 50V DC. A higher DC voltage rating indicates enhanced capability and does not restrict operation at lower voltages. Applications requiring 32V DC operation are fully supported by the 50V DC-rated substitutes.

Q: Are there differences in approval certifications between the main part and substitutes?

A: The main part carries CE, cUL, TUV, UL1077, and UL1500 certifications. All substitute parts carry cURus, IP 40, SAE J1171, UL 1077, and UL 1500 certifications. The substitute parts include additional certifications that expand application scope without reducing compatibility.

Q: What packaging options are available among the substitute parts?

A: All substitute parts are supplied in bulk packaging. Specific part number suffixes (such as -1X, -5X, -W) indicate packaging configuration variations within the CBW57 series. These variations do not affect electrical or mechanical performance.

Q: Which substitute part offers the best inventory availability?

A: CBW57-ES-5A maintains the highest inventory level at 5,629 pieces. For applications requiring immediate availability, this part number provides the shortest lead time among all qualified substitutes.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All CBW57 substitute parts are RoHS3 compliant and REACH unaffected, matching the environmental compliance profile of the main part CLB-053-12CNN-W-D.

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