MM1-B-64-620-1-8GC-B-C Circuit Breaker Equivalent & Substitute Parts

Part Overview

The MM1-B-64-620-1-8GC-B-C is a single-pole magnetic hydraulic delay circuit breaker manufactured by Carling Technologies, rated for 20A at 250V AC and 80V DC with lever panel mount actuation. This component is active in production and maintains full stock availability of 716 units. Equivalent substitute parts from Sensata-Airpax are available to support procurement flexibility, design standardization across product lines, or supply chain continuity when the primary manufacturer part becomes unavailable.

Substiute Parts

MM1-B-64-620-1-8GC-B-C

Carling TechnologiesIn Stock: 821MM1-B-64-620-1-8GC-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-64-620-1-8GC-B-C are qualified based on electrical and mechanical parameter equivalence. All substitute parts share the following critical parameters with the main part:

• 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
• Illumination: None

All substitute parts are manufactured by Sensata-Airpax and maintain active product status. Substitution is valid when these electrical and mechanical parameters remain constant across the application. Differences in series designation (IEG, IEL, IELK, IUG) reflect internal design variations within the Sensata-Airpax product portfolio that do not affect functional equivalence for the specified electrical and mechanical requirements.

Parameter Comparison

Engineering Selection Recommendations

All five substitute parts listed are direct parametric equivalents to the MM1-B-64-620-1-8GC-B-C and are suitable for direct replacement in applications requiring a 20A, 250V AC / 80V DC single-pole magnetic hydraulic delay circuit breaker with lever panel mount actuation.

Compliance Considerations:

The main part MM1-B-64-620-1-8GC-B-C carries approvals from CCC, CSA, and UL1077. Substitute parts carry the following certifications:

• IEG1-1-63-20.0-01-V: CSA, TUV, UL1077
• IEG6-1-72-20.0-01-V: CSA, TUV, UL1077
• IEL1-1-51-20.0-01-V: No approval agencies specified in provided data
• IELK1-1-72-20.0-01-V: UL1077
• IUG1-1-62-30.0-CQ-01: No approval agencies specified in provided data

All substitute parts maintain RoHS compliance and Moisture Sensitivity Level 1 (Unlimited). All parts share the same ECCN (EAR99) and HTSUS code (8536.20.0020) classification.

Selection of substitute parts should account for application-specific regulatory requirements and the approval agencies required by the end-use system design.

Frequently Asked Questions (FAQ)

Q: What makes these parts electrically equivalent to the MM1-B-64-620-1-8GC-B-C?

A: All substitute parts maintain identical electrical specifications: 20A current rating, 250V AC voltage rating, 80V DC voltage rating, and magnetic hydraulic delay breaker type. These parameters define the electrical performance envelope for the circuit protection function.

Q: Can I substitute any of these parts interchangeably?

A: Yes, all five substitute parts are parametric equivalents and can be used interchangeably in applications requiring the specified electrical and mechanical characteristics. However, application-specific regulatory approvals and certifications must be verified against system requirements.

Q: Are there mechanical differences between the main part and substitutes?

A: All parts share identical mechanical specifications: single-pole, lever actuator, panel mount configuration, and no illumination. Mechanical interchangeability is confirmed across all listed parts.

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

A: Series designations reflect internal design variations within the Sensata-Airpax product portfolio. These variations do not affect functional equivalence for the specified electrical and mechanical parameters.

Q: Do all substitute parts have the same approval certifications?

A: No. The main part carries CCC, CSA, and UL1077 approvals. Substitute parts carry varying certifications: IEG series parts include CSA and TUV approvals in addition to UL1077; IELK1 and IUG1 series parts carry UL1077 only. Verify that the selected substitute meets all regulatory requirements for your application.

Q: What is the packaging difference between the main part and substitutes?

A: The main part is specified with packaging designation "-" (not specified). All Sensata-Airpax substitute parts are supplied in Bulk packaging, except IUG1-1-62-30.0-CQ-01 which is specified with packaging designation "-" (not specified).

Q: Are all parts RoHS compliant?

A: Yes. The main part is ROHS3 Compliant. All substitute parts are RoHS Compliant. Both designations indicate compliance with RoHS requirements.

Q: Which substitute part has the highest inventory availability?

A: IELK1-1-72-20.0-01-V maintains the highest inventory with 1212 units in stock, compared to 716 units for the main part.