MM1-B-24-620-1-1BC-B-C Circuit Breaker Equivalent & Substitute Parts

Part Overview

The MM1-B-24-620-1-1BC-B-C is a single-pole magnetic hydraulic delay circuit breaker manufactured by Carling Technologies, rated for 20A at 250V AC and 80V DC. This lever-actuated panel mount breaker is designed for overcurrent protection in industrial and commercial applications. The product maintains active status with full compliance to CCC, CSA, and UL1077 standards. Equivalent substitute parts are necessary when the primary part becomes unavailable, when supply chain optimization is required, or when design flexibility across approved alternatives is needed for production planning.

Substiute Parts

MM1-B-24-620-1-1BC-B-C

Carling TechnologiesIn Stock: 1173MM1-B-24-620-1-1BC-B-C Datasheet

Current PartRFQ

IEG1-1-63-20.0-01-V

Sensata-AirpaxIn Stock: 1152IEG1-1-63-20.0-01-V Datasheet

Parametric EquivalentRFQ

IEG6-1-72-20.0-01-V

Sensata-AirpaxIn Stock: 1099IEG6-1-72-20.0-01-V Datasheet

Parametric EquivalentRFQ

IEL1-1-51-20.0-01-V

Sensata-AirpaxIn Stock: 968IEL1-1-51-20.0-01-V Datasheet

Parametric EquivalentRFQ

IELK1-1-72-20.0-01-V

Sensata-AirpaxIn Stock: 1256IELK1-1-72-20.0-01-V Datasheet

Parametric EquivalentRFQ

IUG1-1-62-30.0-CQ-01

Sensata Technologies – AirpaxIn Stock: 1195IUG1-1-62-30.0-CQ-01 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MM1-B-24-620-1-1BC-B-C are qualified based on strict parametric equivalence across the following criteria:

Mandatory Matching Parameters:

• Current Rating: 20A
• Voltage Rating - AC: 250V
• Voltage Rating - DC: 80V
• Breaker Type: Magnetic (Hydraulic Delay)
• Mounting Type: Panel Mount
• Actuator Type: Lever
• Number of Poles: 1

All substitute parts listed maintain identical electrical specifications and mechanical form factors. Each substitute part is manufactured by Sensata-Airpax or Sensata Technologies – Airpax and carries active product status. All substitutes comply with UL1077 certification and maintain RoHS compliance. Substitutes are grouped by manufacturer series designation (IEG, IEL, IELK, IUG) while maintaining full parametric compatibility with the primary part.

Parameter Comparison

Engineering Selection Recommendations

All five substitute parts are direct parametric equivalents to the MM1-B-24-620-1-1BC-B-C and are suitable for interchangeable use in applications requiring 20A, 250V AC / 80V DC magnetic hydraulic delay circuit breakers with lever actuation and panel mount configuration.

Certification Alignment:

• IEG1-1-63-20.0-01-V: Approved to CSA, TUV, UL1077
• IEG6-1-72-20.0-01-V: Approved to CSA, TUV, UL1077
• IEL1-1-51-20.0-01-V: RoHS Compliant, ECCN EAR99
• IELK1-1-72-20.0-01-V: Approved to UL1077, RoHS Compliant
• IUG1-1-62-30.0-CQ-01: RoHS Compliant, ECCN EAR99

All substitute parts maintain active product status and carry RoHS compliance. The IEG series substitutes (IEG1-1-63-20.0-01-V and IEG6-1-72-20.0-01-V) provide the broadest certification coverage with CSA and TUV approvals in addition to UL1077. The IEL series substitutes (IEL1-1-51-20.0-01-V and IELK1-1-72-20.0-01-V) offer alternative sourcing from the same manufacturer family. The IUG1-1-62-30.0-CQ-01 provides an additional alternative from Sensata Technologies – Airpax.

Frequently Asked Questions (FAQ)

Q: What makes these parts equivalent to the MM1-B-24-620-1-1BC-B-C?

A: All substitute parts match the primary part across all critical electrical and mechanical parameters: 20A current rating, 250V AC / 80V DC voltage ratings, magnetic hydraulic delay breaker type, lever actuation, single-pole configuration, and panel mount form factor. These parameters define the functional and physical compatibility required for direct substitution.

Q: Can I use any of these substitutes interchangeably in my application?

A: Yes. All five substitute parts are parametrically equivalent and maintain identical electrical specifications and mechanical mounting characteristics. Selection among substitutes may be based on availability, lead time, or specific certification requirements for your application.

Q: What is the difference between the IEG, IEL, IELK, and IUG series?

A: These designations represent different product series within the Sensata-Airpax and Sensata Technologies – Airpax families. All series maintain identical electrical and mechanical specifications for this 20A application. Series differences reflect internal design variations and manufacturing processes that do not affect functional compatibility.

Q: Are all substitutes RoHS compliant?

A: Yes. All substitute parts carry RoHS compliance status. The primary part is ROHS3 Compliant, while all substitutes are RoHS Compliant. Both designations satisfy RoHS requirements.

Q: What certifications do the substitute parts carry?

A: The IEG series carries CSA, TUV, and UL1077 approvals. The IEL and IELK series carry UL1077 approval. The IUG series carries no specific approval agency designation in the provided data. All parts maintain EAR99 ECCN classification and 8536.20.0020 HTSUS code.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: All substitute parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling. The primary part does not specify an MSL value.

Q: Are there any packaging differences between the primary part and substitutes?

A: The primary part packaging is listed as "-" (not specified). Most substitutes are packaged in Bulk. The IUG1-1-62-30.0-CQ-01 packaging is also listed as "-" (not specified). Packaging differences do not affect functional compatibility.

Q: What inventory levels are available for each substitute?

A: Current inventory levels are: IEG1-1-63-20.0-01-V (1051 pcs), IEG6-1-72-20.0-01-V (1032 pcs), IEL1-1-51-20.0-01-V (919 pcs), IELK1-1-72-20.0-01-V (1212 pcs), and IUG1-1-62-30.0-CQ-01 (1095 pcs). The primary part has 1123 pcs in stock.