MM1-B-34-620-1-1EB-B-C Circuit Breaker Equivalent & Substitute Parts

Part Overview

The MM1-B-34-620-1-1EB-B-C is a single-pole circuit breaker manufactured by Carling Technologies, featuring magnetic hydraulic delay protection. This component is designed for panel mount applications requiring 20A current protection at 250V AC or 80V DC. The product maintains active status with 952 units in current inventory.

Equivalent and substitute parts become necessary when the primary part number is unavailable, when supply chain constraints occur, or when design flexibility permits selection from multiple qualified manufacturers. Sensata-Airpax manufactures several parametrically equivalent alternatives that satisfy identical electrical and mechanical specifications.

Substiute Parts

MM1-B-34-620-1-1EB-B-C

Carling TechnologiesIn Stock: 1051MM1-B-34-620-1-1EB-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

Substitution eligibility for the MM1-B-34-620-1-1EB-B-C is determined by exact matching of the following 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
• Illumination: None

All substitute parts listed below satisfy these criteria without exception. Variations in series designation, base product number, or manufacturer do not affect functional equivalence when all electrical and mechanical parameters remain constant.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain active product status, ensuring continued manufacturer support and availability. Selection among equivalent options may be based on the following factors:

Regulatory Compliance: The MM1-B-34-620-1-1EB-B-C carries CCC, CSA, and UL1077 approvals. Substitute parts IEG1-1-63-20.0-01-V and IEG6-1-72-20.0-01-V carry CSA, TUV, and UL1077 approvals. IEL1-1-51-20.0-01-V carries no listed approval agencies. IELK1-1-72-20.0-01-V carries UL1077 approval. IUG1-1-62-30.0-CQ-01 carries no listed approval agencies. Applications requiring specific regulatory certifications should reference the approval agency requirements of the target application.

RoHS Compliance: The MM1-B-34-620-1-1EB-B-C is ROHS3 Compliant. All substitute parts are RoHS Compliant, satisfying environmental regulatory requirements.

Inventory Availability: IELK1-1-72-20.0-01-V offers the highest inventory level at 1212 units. IEG1-1-63-20.0-01-V provides 1051 units. IUG1-1-62-30.0-CQ-01 provides 1095 units. IEG6-1-72-20.0-01-V provides 1032 units. IEL1-1-51-20.0-01-V provides 919 units.

Moisture Sensitivity: All Sensata-Airpax substitute parts carry MSL rating of 1 (Unlimited), indicating no moisture sensitivity constraints during storage or handling.

Frequently Asked Questions (FAQ)

Q: Can IEG1-1-63-20.0-01-V replace MM1-B-34-620-1-1EB-B-C in all applications?

A: Yes. Both parts share identical electrical ratings (20A, 250V AC, 80V DC), breaker type (Magnetic Hydraulic Delay), mounting configuration (Panel Mount), actuator type (Lever), and pole count (1). Functional equivalence is complete.

Q: What is the difference between the IEG series and IEL series substitutes?

A: The IEG and IEL series are distinct product lines from Sensata-Airpax. Both series provide parametrically equivalent circuit breakers with identical electrical and mechanical specifications. Series designation reflects internal design architecture but does not affect substitution eligibility when all functional parameters match.

Q: Does the IUG1-1-62-30.0-CQ-01 substitute differ from other options?

A: The IUG1-1-62-30.0-CQ-01 maintains identical electrical and mechanical parameters to all other substitutes. The part number suffix "-30.0-CQ-01" reflects internal design variations within the Sensata-Airpax product portfolio but does not alter functional equivalence.

Q: Are there packaging differences among the substitute parts?

A: The MM1-B-34-620-1-1EB-B-C is packaged as indicated in the original specification. Sensata-Airpax substitutes IEG1-1-63-20.0-01-V, IEG6-1-72-20.0-01-V, IEL1-1-51-20.0-01-V, and IELK1-1-72-20.0-01-V are supplied in Bulk packaging. IUG1-1-62-30.0-CQ-01 packaging is as specified. Packaging differences do not affect electrical or mechanical compatibility.

Q: Which substitute offers the best regulatory coverage?

A: IEG1-1-63-20.0-01-V and IEG6-1-72-20.0-01-V carry CSA, TUV, and UL1077 certifications. Applications requiring TUV certification should select from these two options. The original MM1-B-34-620-1-1EB-B-C carries CCC, CSA, and UL1077 certifications. Regulatory requirements of the target application determine optimal selection.

Q: Can these parts be used interchangeably on existing circuit boards or panels?

A: Yes. All substitute parts maintain identical panel mount configuration, lever actuator type, and single-pole design. Physical mounting and electrical connection points are functionally equivalent.

Q: What is the ECCN classification for these circuit breakers?

A: All parts listed, including the MM1-B-34-620-1-1EB-B-C and all Sensata-Airpax substitutes, carry ECCN classification EAR99, indicating general commercial items with no export restrictions.