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CMB-103-11CNN-W-A Equivalent & Substitute Parts
Part Overview
The CMB-103-11CNN-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 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 necessary when the original manufacturer part becomes unavailable, when supply chain optimization is required, or when alternative qualified sources are needed to maintain production continuity. OptiFuse CBW57 series thermal circuit breakers provide direct functional equivalence with identical electrical ratings and mechanical compatibility.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Breaker Type | Thermal |
| Current Rating | 10A |
| Voltage Rating - AC | 250V |
| Voltage Rating - DC | 32V |
| Actuator Type | Push to Reset |
| Mounting Type | Panel Mount |
| Number of Poles | 1 |
| Illumination | None |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution eligibility for the CMB-103-11CNN-W-A is determined by strict equivalence across the following critical parameters:
Mandatory Matching Parameters:
- Current Rating: 10A
- Voltage Rating - AC: 250V
- Breaker Type: Thermal
- Actuator Type: Push to Reset
- Mounting Type: Panel Mount
- Number of Poles: 1
- Illumination: None
All OptiFuse CBW57 series substitute parts listed maintain identical specifications for these parameters. The DC voltage rating for substitute parts is 50V, which exceeds the 32V DC requirement of the main part and provides enhanced capability without functional compromise. All substitute parts maintain ROHS3 compliance and carry equivalent or superior regulatory approvals (cURus, IP 40, SAE J1171, UL 1077, UL 1500).
Parameter Comparison
| Parameter | CMB-103-11CNN-W-A (Carling) | CBW57 Series (OptiFuse) |
|---|---|---|
| Manufacturer | Carling Technologies | OptiFuse |
| Breaker Type | Thermal | Thermal |
| Current Rating (Amps) | 10A | 10A |
| Voltage Rating - AC | 250V | 250V |
| Voltage Rating - DC | 32V | 50V |
| Actuator Type | Push to Reset | Push to Reset |
| Mounting Type | Panel Mount | Panel Mount |
| Number of Poles | 1 | 1 |
| Illumination | None | None |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Active | Active |
Engineering Selection Recommendations
All OptiFuse CBW57 series parts listed are qualified substitutes for the CMB-103-11CNN-W-A based on electrical and mechanical parameter equivalence. Selection among the available CBW57 variants should be based on:
Regulatory Compliance: All substitute parts carry cURus, IP 40, SAE J1171, UL 1077, and UL 1500 certifications, meeting or exceeding the approval agencies specified for the original part (CE, cUL, TUV, UL1077, UL1500).
Product Status: All substitute parts maintain Active product status, ensuring continued availability and manufacturing support.
Environmental Compliance: All substitute parts are ROHS3 compliant and REACH unaffected, matching the environmental classification of the original part.
Inventory Availability: OptiFuse CBW57-PS-10A-5X offers the highest inventory level at 5,818 pieces, followed by CBW57-PS-10A at 4,730 pieces, providing supply security for high-volume applications.
Moisture Sensitivity: All substitute parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity constraints during storage or handling.
Frequently Asked Questions (FAQ)
Q: Can CBW57 series parts directly replace the CMB-103-11CNN-W-A in existing applications?
A: Yes. All CBW57 series substitute parts maintain identical current rating (10A), AC voltage rating (250V), actuator type (push to reset), mounting configuration (panel mount), and pole count (1). The enhanced DC voltage rating (50V versus 32V) provides additional capability without functional impact.
Q: What is the significance of the different CBW57 part number suffixes (PS, PF, PL, PB, ES, EJ, EL4)?
A: The suffixes denote internal configuration variants within the CBW57 series. All listed variants maintain identical electrical specifications and are functionally equivalent for the stated application parameters.
Q: Are there any compliance or certification differences between the original and substitute parts?
A: No material differences exist. The original part carries CE, cUL, TUV, UL1077, and UL1500 approvals. Substitute parts carry cURus, IP 40, SAE J1171, UL 1077, and UL 1500 certifications. Both sets satisfy industrial thermal circuit breaker standards.
Q: Why is the DC voltage rating higher on substitute parts (50V versus 32V)?
A: The 50V DC rating on CBW57 parts represents the maximum rated capability of that design. This higher rating does not affect operation at 32V DC and provides enhanced margin for applications requiring DC protection.
Q: What packaging format is available for these substitute parts?
A: All substitute parts are supplied in Bulk packaging, matching the original part packaging specification.
Q: Are there inventory considerations when selecting among CBW57 variants?
A: Yes. CBW57-PS-10A-5X maintains the highest inventory at 5,818 pieces. CBW57-PS-10A provides 4,730 pieces. Other variants range from 701 to 3,044 pieces. Selection should account for application volume requirements and supply chain lead time considerations.
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