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CMB-153-27G3N-B-A Circuit Breaker Equivalent & Substitute Parts
Part Overview
The CMB-153-27G3N-B-A is a thermal circuit breaker manufactured by Carling Technologies, rated for 15A at 250V AC and 32V DC. This single-pole, panel-mount device features push-to-reset actuation and holds Active product status. The breaker is designed for overcurrent protection in AC and DC applications and carries multiple regulatory approvals including CE, cUL, TUV, UL1077, and UL1500 certifications. 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 |
|---|---|
| Manufacturer Part Number | CMB-153-27G3N-B-A |
| Manufacturer | Carling Technologies |
| Series | CMB |
| Breaker Type | Thermal |
| Current Rating | 15A |
| 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 CMB-153-27G3N-B-A are qualified based on the following critical parameters that determine functional equivalence:
Matching Parameters (Required for Substitution):
- Current Rating: 15A
- Voltage Rating - AC: 250V
- Mounting Type: Panel Mount
- Breaker Type: Thermal
- Actuator Type: Push to Reset
- Number of Poles: 1
- Illumination: None
Allowable Variance:
- Voltage Rating - DC: The CMB-153-27G3N-B-A operates at 32V DC. All identified substitute parts from OptiFuse operate at 50V DC, which represents a higher voltage capability and is acceptable for applications requiring 32V DC operation.
All substitute parts are manufactured by OptiFuse under the CBW57 series and maintain Active product status with ROHS3 compliance and REACH Unaffected designation. The substitute parts carry regulatory approvals including cURus, IP 40, SAE J1171, UL 1077, and UL 1500 certifications.
Parameter Comparison
| Parameter | CMB-153-27G3N-B-A (Carling) | CBW57-EJ-15A (OptiFuse) | CBW57-EL4-15A (OptiFuse) | CBW57-ES-15A (OptiFuse) | CBW57-ES-15A-5X (OptiFuse) | CBW57-GS-15A-WB (OptiFuse) | CBW57-HB-15A-P (OptiFuse) | CBW57-HS-15A-5X (OptiFuse) | CBW57-PB-15A-5X (OptiFuse) | CBW57-PB-15A-WX (OptiFuse) | CBW57-PS-15A (OptiFuse) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Current Rating (Amps) | 15A | 15A | 15A | 15A | 15A | 15A | 15A | 15A | 15A | 15A | 15A |
| Voltage Rating - AC | 250V | 250V | 250V | 250V | 250V | 250V | 250V | 250V | 250V | 250V | 250V |
| Voltage Rating - DC | 32V | 50V | 50V | 50V | 50V | 50V | 50V | 50V | 50V | 50V | 50V |
| Breaker Type | Thermal | Thermal | Thermal | Thermal | Thermal | Thermal | Thermal | Thermal | Thermal | Thermal | Thermal |
| Mounting Type | Panel Mount | 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 | Push to Reset |
| Number of Poles | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Illumination | None | None | None | None | None | None | None | None | None | None | None |
| Product Status | Active | 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 | ROHS3 Compliant |
| REACH Status | REACH Unaffected | REACH Unaffected | REACH Unaffected | REACH Unaffected | REACH Unaffected | REACH Unaffected | REACH Unaffected | REACH Unaffected | REACH Unaffected | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
All identified substitute parts maintain Active product status and ROHS3 compliance, ensuring continued regulatory alignment with environmental and hazardous substance restrictions. The substitute parts carry UL 1077 and UL 1500 certifications, which align with the primary part's UL approval designations. Additionally, the OptiFuse CBW57 series parts include cURus and SAE J1171 certifications, providing expanded regulatory coverage.
The primary distinction between the CMB-153-27G3N-B-A and substitute parts is the DC voltage rating: the Carling part operates at 32V DC while all OptiFuse substitutes operate at 50V DC. This higher DC voltage rating in the substitute parts does not restrict their use in 32V DC applications, as the breaker will function within its design parameters at the lower voltage.
Inventory availability varies across substitute part numbers. The CBW57-HB-15A-P offers the highest inventory level at 8,822 pieces, while CBW57-PB-15A-WX offers the lowest at 936 pieces. Selection among substitute parts should consider application-specific requirements and inventory availability.
Frequently Asked Questions (FAQ)
Q: Can OptiFuse CBW57 series parts directly replace the Carling CMB-153-27G3N-B-A?
A: Yes. All identified OptiFuse CBW57 series parts match the critical functional parameters: 15A current rating, 250V AC voltage rating, thermal breaker type, panel mount configuration, push-to-reset actuation, and single-pole design. The higher 50V DC rating in OptiFuse parts is compatible with 32V DC applications.
Q: What is the significance of the DC voltage rating difference?
A: The CMB-153-27G3N-B-A is rated for 32V DC operation, while all OptiFuse substitutes are rated for 50V DC. A higher voltage rating indicates the component can safely operate at voltages up to that level. Therefore, a 50V DC-rated breaker operates safely at 32V DC. This represents an acceptable substitution parameter.
Q: Are all substitute parts certified to the same standards?
A: The CMB-153-27G3N-B-A carries CE, cUL, TUV, UL1077, and UL1500 certifications. All OptiFuse substitute parts carry cURus, IP 40, SAE J1171, UL 1077, and UL 1500 certifications. Both sets include UL 1077 and UL 1500 designations. The OptiFuse parts provide additional certifications through cURus and SAE J1171.
Q: Do all substitute parts have identical packaging?
A: All parts listed are supplied in Bulk packaging. Specific packaging configurations may vary by part number suffix (such as -5X or -WX designations), but all are suitable for component-level distribution and integration.
Q: Which substitute part should be selected for maximum inventory availability?
A: CBW57-HB-15A-P offers the highest inventory level at 8,822 pieces in stock. This part maintains all functional equivalence parameters and provides the greatest availability for immediate procurement.
Q: Are there any illumination differences between the primary part and substitutes?
A: No. Both the CMB-153-27G3N-B-A and all identified substitute parts have no illumination feature. This parameter is consistent across all parts.
Q: What is the base product number for OptiFuse substitutes?
A: The base product number for all OptiFuse substitute parts is CBW57. Individual part numbers include additional designations indicating specific connector or terminal configurations.
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