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CMB-083-27G3N-B-A Circuit Breaker Equivalent & Substitute Parts
Part Overview
The CMB-083-27G3N-B-A is a thermal circuit breaker manufactured by Carling Technologies, rated for 8A at 250V AC and 32V DC. This single-pole, panel-mount breaker features push-to-reset actuation and is designed for overcurrent protection in electrical systems. 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.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Breaker Type | Thermal |
| Current Rating | 8A |
| Voltage Rating - AC | 250V |
| Voltage Rating - DC | 32V |
| Mounting Type | Panel Mount |
| Actuator Type | Push to Reset |
| Number of Poles | 1 |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitute parts for the CMB-083-27G3N-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: 8A
- Voltage Rating - AC: 250V
- Mounting Type: Panel Mount
- Breaker Type: Thermal
- Actuator Type: Push to Reset
- Number of Poles: 1
- RoHS3 Compliance
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, maintaining backward compatibility for DC applications. Each substitute part carries independent regulatory approvals including cURus, UL 1077, and UL 1500 certifications.
Parameter Comparison
| Parameter | CMB-083-27G3N-B-A (Carling) | CBW57-AS-8A (OptiFuse) | CBW57-EJ-8A (OptiFuse) | CBW57-HS-8A (OptiFuse) | CBW57-PB-8A-5X (OptiFuse) | CBW57-PS-8A-5X (OptiFuse) |
|---|---|---|---|---|---|---|
| Breaker Type | Thermal | Thermal | Thermal | Thermal | Thermal | Thermal |
| Current Rating (Amps) | 8A | 8A | 8A | 8A | 8A | 8A |
| Voltage Rating - AC | 250V | 250V | 250V | 250V | 250V | 250V |
| Voltage Rating - DC | 32V | 50V | 50V | 50V | 50V | 50V |
| Mounting Type | 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 |
| Number of Poles | 1 | 1 | 1 | 1 | 1 | 1 |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
All five OptiFuse CBW57 series substitutes meet the electrical and mechanical requirements for direct replacement of the CMB-083-27G3N-B-A. Each substitute part carries Active product status and maintains ROHS3 compliance. The substitute parts are certified to cURus, UL 1077, and UL 1500 standards, providing regulatory equivalence for applications requiring these certifications.
The DC voltage rating differential (50V for substitutes versus 32V for the main part) presents no compatibility constraint for applications operating at or below 32V DC. Applications requiring operation above 32V DC but within the 50V DC range may utilize substitute parts without electrical derating.
Inventory availability varies across substitute options, with CBW57-HS-8A offering the highest stock level at 3,442 pieces. Selection among substitute parts should be based on application-specific mechanical interface requirements, as part number suffixes indicate different actuator or terminal configurations within the CBW57 series.
Frequently Asked Questions (FAQ)
Q: Can CBW57 series parts directly replace the CMB-083-27G3N-B-A in all applications?
A: Yes. All five CBW57 substitutes share identical current rating (8A), AC voltage rating (250V), mounting type (panel mount), actuator type (push to reset), and pole configuration (1-pole) with the main part. The higher DC voltage rating (50V) of substitutes does not restrict compatibility with 32V DC applications.
Q: What is the significance of the part number suffixes in the CBW57 series?
A: The suffixes (AS, EJ, HS, PB, PS) indicate different mechanical configurations within the CBW57 series, such as actuator style or terminal type. Selection should be based on specific panel mount interface requirements of the application.
Q: Are all substitute parts certified to the same standards as the main part?
A: Substitute parts carry independent certifications to cURus, UL 1077, and UL 1500. The main part carries CE, cUL, TUV, UL1077, and UL1500 certifications. Both sets of certifications satisfy UL 1077 and UL 1500 requirements. Applications requiring CE or TUV certification should verify substitute part compliance with specific regional requirements.
Q: What is the Moisture Sensitivity Level (MSL) for substitute parts?
A: All CBW57 substitutes carry MSL 1 (Unlimited), indicating no moisture sensitivity constraints for storage or handling.
Q: How do the ECCN and HTSUS codes differ between the main part and substitutes?
A: The main part carries ECCN EAR99 and HTSUS 8536.20.0020. Substitute parts carry ECCN EAR99 and HTSUS 8536.20.0040. Both HTSUS codes fall within the same tariff classification for circuit breakers. Verify applicable trade regulations for specific jurisdictions.
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