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CLB-103-12C2N-B-A Equivalent & Substitute Parts
Part Overview
The CLB-103-12C2N-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 part is RoHS3 compliant and REACH unaffected. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when inventory requirements necessitate alternative manufacturers or configurations.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | CLB-103-12C2N-B-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 |
| REACH Status | REACH Unaffected |
Substitute Part Grouping Explanation
Substitute parts for the CLB-103-12C2N-B-A are qualified based on the following critical parameters that determine functional equivalence:
Matching Parameters (Required for Substitution):
- 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
Parameter Variance Allowed:
- Voltage Rating - DC: The CLB-103-12C2N-B-A operates at 32V DC. Substitute parts from OptiFuse operate at 50V DC, which provides enhanced capability within the same application envelope.
- Manufacturer: OptiFuse CBW57 series parts provide equivalent functionality from an alternative qualified manufacturer.
All substitute parts maintain active product status, RoHS3 compliance, and REACH unaffected status. Approval agencies differ between manufacturers but all parts carry recognized international certifications (cURus, UL 1077, UL 1500).
Parameter Comparison
| Part Number | Manufacturer | Current Rating (A) | Voltage AC (V) | Voltage DC (V) | Mounting Type | Breaker Type | Actuator Type | Poles | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|
| CLB-103-12C2N-B-A | Carling Technologies | 10 | 250 | 32 | Panel Mount | Thermal | Push to Reset | 1 | Active | ROHS3 Compliant |
| CBW57-EJ-10A | OptiFuse | 10 | 250 | 50 | Panel Mount | Thermal | Push to Reset | 1 | Active | ROHS3 Compliant |
| CBW57-EL4-10A | OptiFuse | 10 | 250 | 50 | Panel Mount | Thermal | Push to Reset | 1 | Active | ROHS3 Compliant |
| CBW57-ES-10A-5H | OptiFuse | 10 | 250 | 50 | Panel Mount | Thermal | Push to Reset | 1 | Active | ROHS3 Compliant |
| CBW57-PB-10A-5X | OptiFuse | 10 | 250 | 50 | Panel Mount | Thermal | Push to Reset | 1 | Active | ROHS3 Compliant |
| CBW57-PB-10A-X | OptiFuse | 10 | 250 | 50 | Panel Mount | Thermal | Push to Reset | 1 | Active | ROHS3 Compliant |
| CBW57-PF-10A-5X | OptiFuse | 10 | 250 | 50 | Panel Mount | Thermal | Push to Reset | 1 | Active | ROHS3 Compliant |
| CBW57-PL-10A-5X | OptiFuse | 10 | 250 | 50 | Panel Mount | Thermal | Push to Reset | 1 | Active | ROHS3 Compliant |
| CBW57-PS-10A | OptiFuse | 10 | 250 | 50 | Panel Mount | Thermal | Push to Reset | 1 | Active | ROHS3 Compliant |
| CBW57-PS-10A-1X | OptiFuse | 10 | 250 | 50 | Panel Mount | Thermal | Push to Reset | 1 | Active | ROHS3 Compliant |
| CBW57-PS-10A-5X | OptiFuse | 10 | 250 | 50 | Panel Mount | Thermal | Push to Reset | 1 | Active | ROHS3 Compliant |
Engineering Selection Recommendations
All listed substitute parts are qualified equivalents for the CLB-103-12C2N-B-A based on matching electrical and mechanical specifications. Selection among the OptiFuse CBW57 series alternatives should be based on the following factors:
Inventory Availability: CBW57-PS-10A-5X offers the highest inventory level at 5,818 pieces, followed by CBW57-PS-10A at 4,730 pieces and CBW57-ES-10A-5H at 3,044 pieces. These options provide optimal supply chain flexibility.
Certification Alignment: All substitute parts carry cURus, UL 1077, and UL 1500 certifications. The original CLB-103-12C2N-B-A includes additional CE and TUV certifications. Verify that the substitute part's certification portfolio meets the specific regulatory requirements of the target application.
DC Voltage Rating Enhancement: OptiFuse CBW57 series parts are rated for 50V DC compared to the 32V DC rating of the CLB-103-12C2N-B-A. This higher DC rating provides additional operational margin in DC applications without compromising AC performance.
Product Status: All parts maintain active product status, ensuring continued manufacturer support and availability.
Compliance Status: All parts are RoHS3 compliant and REACH unaffected, matching the environmental compliance profile of the original part.
Frequently Asked Questions (FAQ)
Q: Can CBW57 series parts directly replace the CLB-103-12C2N-B-A?
A: Yes. The CBW57 series parts are parametric equivalents that match all critical specifications: 10A current rating, 250V AC voltage rating, panel mount configuration, thermal breaker type, push-to-reset actuation, and single-pole design. The 50V DC rating of CBW57 parts exceeds the 32V DC requirement of the CLB-103-12C2N-B-A, providing enhanced capability.
Q: What is the significance of the different part number suffixes in the CBW57 series?
A: The suffixes (such as -EJ, -EL4, -ES, -PB, -PF, -PL, -PS) represent different connector or terminal configurations within the CBW57 series. All variants maintain identical electrical ratings and thermal breaker functionality. Selection should be based on the specific connector or terminal type required by the application.
Q: Are there differences in approval agencies between the main part and substitutes?
A: Yes. The CLB-103-12C2N-B-A carries CE, cUL, TUV, UL1077, and UL1500 approvals. The CBW57 series parts carry cURus, IP 40, SAE J1171, UL 1077, and UL 1500 approvals. Both sets include UL 1077 and UL 1500 certifications. Confirm that the substitute part's certification portfolio satisfies the regulatory requirements of the specific application.
Q: What is the Moisture Sensitivity Level (MSL) for substitute parts?
A: All CBW57 series substitute parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.
Q: Which substitute part offers the best inventory availability?
A: CBW57-PS-10A-5X provides the highest inventory level at 5,818 pieces in stock, followed by CBW57-PS-10A at 4,730 pieces. These options offer optimal supply chain continuity.
Q: Are the electrical performance characteristics identical between the main part and all substitutes?
A: The electrical performance is equivalent across all parts for AC applications at 250V and 10A. For DC applications, the CBW57 series parts provide enhanced performance with a 50V DC rating compared to the 32V DC rating of the CLB-103-12C2N-B-A. Both ratings are suitable for standard circuit protection applications within their respective voltage envelopes.
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