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CMB-073-11C1N-B-A/07 Equivalent & Substitute Parts
Part Overview
The CMB-073-11C1N-B-A/07 is a thermal circuit breaker manufactured by Carling Technologies, rated for 7A at 250V AC and 32V DC. This single-pole, push-to-reset panel mount breaker is designed for overcurrent protection in low-voltage DC and AC applications. The part is currently active in production with 1041 units in stock. Equivalent substitute parts are necessary when the primary manufacturer part is unavailable, when supply chain constraints occur, or when design flexibility across approved alternatives is required for procurement optimization.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Current Rating | 7A |
| Voltage Rating - AC | 250V |
| Voltage Rating - DC | 32V |
| Breaker Type | Thermal |
| Mounting Type | Panel Mount |
| Actuator Type | Push to Reset |
| Number of Poles | 1 |
Substitute Part Grouping Explanation
Substitution eligibility for the CMB-073-11C1N-B-A/07 is determined by strict equivalence across the following parameters: current rating (7A), AC voltage rating (250V), DC voltage rating (32V), breaker type (thermal), mounting configuration (panel mount), actuator mechanism (push to reset), and pole count (single pole). All identified substitute parts match these core electrical and mechanical specifications. Substitutes are grouped by manufacturer: Qualtek (QLB and QMB series), TE Connectivity Potter & Brumfield (W28 series), and the original Carling Technologies CMB series. Compliance status and packaging format vary among substitutes but do not affect functional interchangeability within the specified electrical parameters.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Series | Current Rating (A) | Voltage AC (V) | Voltage DC (V) | Breaker Type | Mounting Type | Actuator Type | Poles | RoHS Status | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| CMB-073-11C1N-B-A/07 | Carling Technologies | CMB | 7 | 250 | 32 | Thermal | Panel Mount | Push to Reset | 1 | ROHS3 Compliant | 1041 |
| QLB-073-00DNN-3BA | Qualtek | QLB | 7 | 250 | 32 | Thermal | Panel Mount | Push to Reset | 1 | ROHS3 Compliant | 1344 |
| QLB-073-11B3N-3BA | Qualtek | QLB | 7 | 250 | 32 | Thermal | Panel Mount | Push to Reset | 1 | ROHS3 Compliant | 1392 |
| QMB-073-00ENN-3BA | Qualtek | QMB | 7 | 250 | 32 | Thermal | Panel Mount | Push to Reset | 1 | ROHS3 Compliant | 1201 |
| QMB-073-11C3N-3BA | Qualtek | QMB | 7 | 250 | 32 | Thermal | Panel Mount | Push to Reset | 1 | ROHS3 Compliant | 1357 |
| W28-XQ1A-7 | TE Connectivity Potter & Brumfield Relays | W28 | 7 | 250 | 32 | Thermal | Panel Mount | Push to Reset | 1 | RoHS non-compliant | 8087 |
| W28-XT1A-7 | TE Connectivity Potter & Brumfield Relays | W28 | 7 | 250 | 32 | Thermal | Panel Mount | Push to Reset | 1 | ROHS3 Compliant | 964 |
Engineering Selection Recommendations
For applications requiring ROHS3 compliance, the following parts are suitable: QLB-073-00DNN-3BA, QLB-073-11B3N-3BA, QMB-073-00ENN-3BA, QMB-073-11C3N-3BA, and W28-XT1A-7. The original CMB-073-11C1N-B-A/07 carries CE, cUL, TUV, UL1077, and UL1500 certifications. QMB-073-00ENN-3BA and QMB-073-11C3N-3BA carry TUV certification. W28-XQ1A-7 is available in higher inventory (8087 units) but is RoHS non-compliant and carries no listed approval agencies. For applications where RoHS compliance is not mandated, W28-XQ1A-7 offers maximum supply availability. All substitute parts maintain identical electrical ratings and mechanical form factors, ensuring direct functional replacement within the specified parameters.
Frequently Asked Questions (FAQ)
Q: What determines if a part can substitute for the CMB-073-11C1N-B-A/07?
A: Substitution is valid when the alternative part maintains identical current rating (7A), AC voltage rating (250V), DC voltage rating (32V), breaker type (thermal), mounting type (panel mount), actuator type (push to reset), and pole count (1). All listed substitutes meet these criteria.
Q: Are there differences in packaging between the main part and substitutes?
A: The CMB-073-11C1N-B-A/07 is packaged as specified by Carling Technologies. Qualtek substitutes (QLB and QMB series) are supplied in bulk packaging. TE Connectivity W28 series parts are also supplied in bulk. Packaging format does not affect electrical or mechanical compatibility.
Q: Which substitute has the highest inventory availability?
A: W28-XQ1A-7 has the highest inventory at 8087 units. However, this part is RoHS non-compliant. For RoHS3-compliant alternatives with high availability, QLB-073-11B3N-3BA (1392 units) and QMB-073-11C3N-3BA (1357 units) are recommended.
Q: What compliance certifications should I consider when selecting a substitute?
A: The original CMB-073-11C1N-B-A/07 carries CE, cUL, TUV, UL1077, and UL1500 certifications. QMB series parts (QMB-073-00ENN-3BA and QMB-073-11C3N-3BA) carry TUV certification. QLB series parts carry no listed approval agencies. W28-XQ1A-7 carries no listed approval agencies. Application requirements for specific certifications should guide substitute selection.
Q: Is the CMB-073-11C1N-B-A/07 still in active production?
A: Yes, the CMB-073-11C1N-B-A/07 is listed as active product status with 1041 units currently in stock. All listed substitutes are also active products.
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