MM1-B-32-620-1-1AB-B-C Circuit Breaker Equivalent & Substitute Parts

Part Overview

The MM1-B-32-620-1-1AB-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 component is designed for panel mount applications with lever actuation and is currently active in production. Equivalent substitute parts are necessary when the primary part is unavailable, when supply chain optimization is required, or when alternative manufacturers' components meet identical electrical and mechanical specifications for the application.

Substiute Parts

MM1-B-32-620-1-1AB-B-C

Carling TechnologiesIn Stock: 1202MM1-B-32-620-1-1AB-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

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MM1-B-32-620-1-1AB-B-C circuit breaker is based on strict equivalence of the following electrical and mechanical parameters:

Critical Substitution Parameters:

• Current Rating: 20A (exact match required)
• Voltage Rating AC: 250V (exact match required)
• Voltage Rating DC: 80V (exact match required)
• Breaker Type: Magnetic (Hydraulic Delay) (exact match required)
• Mounting Type: Panel Mount (exact match required)
• Actuator Type: Lever (exact match required)
• Number of Poles: 1 (exact match required)
• Illumination: None (exact match required)

All substitute parts listed are manufactured by Sensata-Airpax and meet these exact electrical and mechanical specifications. Substitution is valid only when all parameters match the main part specification.

Parameter Comparison

Engineering Selection Recommendations

All four substitute parts are functionally equivalent to the MM1-B-32-620-1-1AB-B-C and are suitable for direct replacement based on electrical and mechanical parameter equivalence.

Compliance Considerations:

The MM1-B-32-620-1-1AB-B-C carries approvals from CCC, CSA, and UL1077. Substitute parts carry the following certifications:

• IEL1-1-51-20.0-01-V: No approval agencies listed in provided data
• IELK1-1-72-20.0-01-V: UL1077 approval
• IEG1-1-63-20.0-01-V: CSA, TUV, and UL1077 approvals
• IEG6-1-72-20.0-01-V: CSA, TUV, and UL1077 approvals

Selection should account for application-specific regulatory requirements. The IEG series parts (IEG1-1-63-20.0-01-V and IEG6-1-72-20.0-01-V) provide the broadest certification coverage with CSA, TUV, and UL1077 approvals.

All substitute parts are RoHS compliant and carry EAR99 ECCN classification, matching the regulatory profile of the main part.

Frequently Asked Questions (FAQ)

Q: Can IEL1-1-51-20.0-01-V be used as a direct replacement for MM1-B-32-620-1-1AB-B-C?

A: Yes. The IEL1-1-51-20.0-01-V meets all electrical and mechanical specifications: 20A current rating, 250V AC and 80V DC voltage ratings, magnetic hydraulic delay operation, panel mount configuration, lever actuation, and single-pole design. However, approval agency certifications differ; verify that application requirements align with available certifications.

Q: What is the difference between the IEG1-1-63-20.0-01-V and IEG6-1-72-20.0-01-V?

A: Both parts are electrically and mechanically identical with matching 20A, 250V AC, 80V DC specifications. The difference lies in the base product number designation (IEG1 versus IEG6), which reflects internal Sensata-Airpax product line differentiation. Both carry CSA, TUV, and UL1077 certifications.

Q: Are all substitute parts available in the same packaging as the main part?

A: The MM1-B-32-620-1-1AB-B-C is packaged as indicated in the main part specification. All substitute parts are supplied in Bulk packaging. Packaging format should be confirmed with the supplier if specific packaging requirements exist for the application.

Q: Do the substitute parts have the same moisture sensitivity level?

A: The Sensata-Airpax substitute parts (IEL1-1-51-20.0-01-V, IELK1-1-72-20.0-01-V, IEG1-1-63-20.0-01-V, and IEG6-1-72-20.0-01-V) all carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage and handling.

Q: Can these parts be used interchangeably in existing designs?

A: Yes, provided that the application does not have specific manufacturer or certification requirements beyond the electrical and mechanical specifications. All substitute parts match the critical parameters: 20A rating, 250V AC/80V DC operation, magnetic hydraulic delay function, panel mount installation, and lever control. Physical dimensions and mounting interface compatibility should be confirmed with detailed mechanical drawings if not provided in the specification.

Q: What is the inventory status of substitute parts?

A: Current inventory levels are: IEL1-1-51-20.0-01-V (919 units), IELK1-1-72-20.0-01-V (1212 units), IEG1-1-63-20.0-01-V (1051 units), and IEG6-1-72-20.0-01-V (1032 units). The main part MM1-B-32-620-1-1AB-B-C has 1144 units in stock.