CMB-133-11C3N-B-A Circuit Breaker Thermal Equivalent & Substitute Parts

Part Overview

The CMB-133-11C3N-B-A is a thermal circuit breaker manufactured by Carling Technologies, rated for 13A at 250V AC and 32V DC. This single-pole, panel-mount breaker features push-to-reset actuation and is designed for overcurrent protection in industrial and commercial applications. The part is currently active in production with 989 units in stock. Equivalent substitute parts are identified to provide procurement flexibility, supply chain redundancy, and alternative sourcing options when the primary part is unavailable.

Substiute Parts

CMB-133-11C3N-B-A

Carling TechnologiesIn Stock: 1041CMB-133-11C3N-B-A Datasheet

Current PartRFQ

W28-XQ1A-13

TE Connectivity Potter & Brumfield RelaysIn Stock: 1724W28-XQ1A-13 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CMB-133-11C3N-B-A are identified based on electrical and mechanical parameter equivalence. The following criteria determine substitutability:

• Current Rating: 13A (exact match required)
• Voltage Rating - AC: 250V (exact match required)
• Voltage Rating - DC: 32V (exact match required)
• Breaker Type: Thermal (exact match required)
• Mounting Type: Panel Mount (exact match required)
• Actuator Type: Push to Reset (exact match required)
• Number of Poles: 1 (exact match required)

The W28-XQ1A-13 manufactured by TE Connectivity Potter & Brumfield Relays meets all electrical and mechanical parameters specified above, qualifying it as a parametric equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

Both the CMB-133-11C3N-B-A and W28-XQ1A-13 are active production parts with equivalent electrical and mechanical specifications. Selection between these parts should be based on:

• Availability: The W28-XQ1A-13 has higher inventory (1636 units) compared to the CMB-133-11C3N-B-A (989 units)
• Regulatory Compliance: Both parts are ROHS3 compliant and carry equivalent certifications (CE, cUL, TUV, UL1077, UL1500 for the Carling part; equivalent compliance for the TE Connectivity part)
• Supply Chain Requirements: The CMB-133-11C3N-B-A is REACH Unaffected, while the W28-XQ1A-13 is REACH Affected; this distinction may impact procurement timelines in regulated markets
• Manufacturer Preference: Design specifications may require a specific manufacturer; however, from an electrical and mechanical standpoint, either part satisfies the 13A, 250V AC / 32V DC thermal circuit breaker requirement

Frequently Asked Questions (FAQ)

Q: Can the W28-XQ1A-13 be used as a direct replacement for the CMB-133-11C3N-B-A?

A: Yes. Both parts are single-pole thermal circuit breakers with identical current ratings (13A), voltage ratings (250V AC / 32V DC), panel-mount configuration, and push-to-reset actuation. They are parametric equivalents and can be substituted in applications requiring these specifications.

Q: Are there any differences in certifications between these two parts?

A: Both parts carry equivalent regulatory approvals (CE, cUL, TUV, UL1077, UL1500). The primary difference is REACH status: the CMB-133-11C3N-B-A is REACH Unaffected, while the W28-XQ1A-13 is REACH Affected. This may affect procurement in certain regulated regions.

Q: What is the significance of the Moisture Sensitivity Level (MSL) rating of 1?

A: An MSL rating of 1 (Unlimited) indicates that both parts have no moisture sensitivity restrictions and do not require special handling, storage, or shelf-life management related to moisture exposure.

Q: Do both parts come in the same packaging?

A: Both parts are supplied in bulk packaging. Confirm specific packaging requirements with your procurement department, as bulk packaging may vary by distributor or order quantity.

Q: What does the ECCN classification EAR99 mean?

A: ECCN EAR99 indicates that both parts are subject to the Export Administration Regulations (EAR) but are classified as items not requiring a license for export to most destinations. Verify export requirements based on your specific destination and end-use application.