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CLB-103-12CNN-W-A Equivalent & Substitute Parts
Part Overview
The CLB-103-12CNN-W-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 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 become necessary when the primary part experiences extended lead times, inventory constraints, or when design flexibility permits selection from alternative manufacturers offering equivalent electrical and mechanical specifications. The substitute parts listed below maintain functional equivalence through matching current ratings, voltage specifications, mounting configurations, and approval certifications.
Substiute Parts
Key Parameters
| Parameter | CLB-103-12CNN-W-A |
|---|---|
| Manufacturer | Carling Technologies |
| Series | CLB |
| 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 |
| Product Status | Active |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitute parts for the CLB-103-12CNN-W-A are qualified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:
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)
Allowable 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, maintaining backward compatibility with the original specification.
All substitute parts listed are manufactured by OptiFuse under the CBW57 series and maintain active product status with equivalent regulatory approvals (cURus, UL 1077, UL 1500). Each substitute part is ROHS3 compliant and REACH unaffected, matching the environmental compliance profile of the original part.
Parameter Comparison
| Part Number | Manufacturer | Current Rating (A) | Voltage AC (V) | Voltage DC (V) | Mounting Type | Actuator Type | Poles | Breaker Type | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|
| CLB-103-12CNN-W-A | Carling Technologies | 10 | 250 | 32 | Panel Mount | Push to Reset | 1 | Thermal | Active | ROHS3 Compliant |
| CBW57-EJ-10A | OptiFuse | 10 | 250 | 50 | Panel Mount | Push to Reset | 1 | Thermal | Active | ROHS3 Compliant |
| CBW57-EL4-10A | OptiFuse | 10 | 250 | 50 | Panel Mount | Push to Reset | 1 | Thermal | Active | ROHS3 Compliant |
| CBW57-ES-10A-5H | OptiFuse | 10 | 250 | 50 | Panel Mount | Push to Reset | 1 | Thermal | Active | ROHS3 Compliant |
| CBW57-PB-10A-5X | OptiFuse | 10 | 250 | 50 | Panel Mount | Push to Reset | 1 | Thermal | Active | ROHS3 Compliant |
| CBW57-PB-10A-X | OptiFuse | 10 | 250 | 50 | Panel Mount | Push to Reset | 1 | Thermal | Active | ROHS3 Compliant |
| CBW57-PF-10A-5X | OptiFuse | 10 | 250 | 50 | Panel Mount | Push to Reset | 1 | Thermal | Active | ROHS3 Compliant |
| CBW57-PL-10A-5X | OptiFuse | 10 | 250 | 50 | Panel Mount | Push to Reset | 1 | Thermal | Active | ROHS3 Compliant |
| CBW57-PS-10A | OptiFuse | 10 | 250 | 50 | Panel Mount | Push to Reset | 1 | Thermal | Active | ROHS3 Compliant |
| CBW57-PS-10A-1X | OptiFuse | 10 | 250 | 50 | Panel Mount | Push to Reset | 1 | Thermal | Active | ROHS3 Compliant |
| CBW57-PS-10A-5X | OptiFuse | 10 | 250 | 50 | Panel Mount | Push to Reset | 1 | Thermal | Active | ROHS3 Compliant |
Engineering Selection Recommendations
All listed substitute parts maintain functional equivalence to the CLB-103-12CNN-W-A through matching electrical specifications and mechanical configurations. The OptiFuse CBW57 series parts are qualified alternatives based on the following factors:
Regulatory Compliance: All substitute parts carry cURus and UL 1077/UL 1500 certifications, providing equivalent safety approvals to the original Carling Technologies part. These certifications satisfy industrial and commercial application requirements.
Environmental Compliance: All substitute parts are ROHS3 compliant and REACH unaffected, matching the environmental regulatory status of the original part.
Electrical Specifications: The 10A current rating and 250V AC voltage rating are maintained across all substitutes. The DC voltage rating of 50V on substitute parts exceeds the original 32V specification, providing enhanced capability for DC applications without compromising AC performance.
Mechanical Compatibility: Panel-mount configuration, push-to-reset actuation, and single-pole design are consistent across all parts, ensuring direct mechanical interchangeability in existing panel layouts.
Product Status: All substitute parts maintain active product status, ensuring continued availability and manufacturer support.
Frequently Asked Questions (FAQ)
Q: Can CBW57 series parts directly replace the CLB-103-12CNN-W-A in existing installations?
A: Yes. All CBW57 substitute parts maintain identical current ratings (10A), AC voltage ratings (250V), mounting configurations (panel mount), and actuation mechanisms (push to reset). The mechanical footprint and electrical interface are compatible for direct substitution.
Q: What is the significance of the higher 50V DC rating on substitute parts compared to the original 32V DC specification?
A: The 50V DC rating on OptiFuse CBW57 parts represents an enhanced voltage capability. This higher rating is acceptable for applications originally specified at 32V DC, as it provides additional margin for DC circuit protection without affecting AC performance or safety characteristics.
Q: Are all listed substitute parts suitable for the same approval standards?
A: Yes. All substitute parts carry cURus, UL 1077, and UL 1500 certifications. While the original part includes CE and TUV approvals, the substitute parts maintain equivalent UL-based safety standards appropriate for industrial and commercial circuit protection applications.
Q: What do the suffix codes in CBW57 part numbers indicate?
A: The suffix codes (such as -EJ, -EL4, -ES, -PB, -PF, -PL, -PS) represent different connector or terminal configurations within the CBW57 series. All variants maintain identical electrical specifications and thermal protection characteristics. Selection should be based on the specific terminal or connector requirement for your application.
Q: Are there inventory considerations when selecting among the substitute parts?
A: Yes. Inventory levels vary across the CBW57 variants. CBW57-PS-10A-5X maintains the highest inventory at 5,818 pieces, while other variants range from 701 to 4,730 pieces. For applications without specific terminal configuration requirements, CBW57-PS-10A-5X offers the best availability.
Q: Do all substitute parts meet the same RoHS and REACH compliance requirements?
A: Yes. All listed CBW57 substitute parts are ROHS3 compliant and REACH unaffected, matching the environmental compliance profile of the original CLB-103-12CNN-W-A.
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