MM1-B-34-620-1-2BA-B-C Circuit Breaker Equivalent & Substitute Parts

Part Overview

The MM1-B-34-620-1-2BA-B-C is a single-pole, magnetic hydraulic delay circuit breaker manufactured by Carling Technologies. This panel-mount breaker is rated for 20A at 250V AC and 80V DC operation with lever actuation. The product maintains active status with 1094 units in current inventory.

Substitute parts are necessary when the primary manufacturer part becomes unavailable, when supply chain constraints occur, or when design flexibility permits selection from qualified alternative manufacturers. All substitute parts listed maintain identical electrical and mechanical specifications, ensuring direct functional equivalence in circuit protection applications.

Substiute Parts

MM1-B-34-620-1-2BA-B-C

Carling TechnologiesIn Stock: 1200MM1-B-34-620-1-2BA-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 is determined by exact equivalence across all critical electrical and mechanical parameters. The following parameters must match identically between the main part and any substitute:

• 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 satisfy these requirements. Sensata-Airpax manufactures four parametric equivalents across the IEG, IEL, and IUG series. Each substitute maintains identical functional performance and electrical characteristics, differing only in internal design architecture and manufacturer-specific certifications.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain active product status and full RoHS compliance. Selection among available substitutes is based on regulatory certifications and supply availability:

IEG1-1-63-20.0-01-V and IEG6-1-72-20.0-01-V hold CSA, TUV, and UL1077 certifications, providing the broadest regulatory coverage for North American and international applications.

IEL1-1-51-20.0-01-V carries RoHS compliance with no specific approval agency restrictions listed, suitable for applications where CSA or TUV certification is not mandated.

IELK1-1-72-20.0-01-V holds UL1077 certification and offers the highest current inventory (1212 units), supporting rapid procurement timelines.

IUG1-1-62-30.0-CQ-01 provides equivalent electrical performance with RoHS compliance and maintains inventory parity with the primary part (1095 units).

All substitutes are packaged in bulk format and carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture-related handling restrictions during storage or assembly.

Frequently Asked Questions (FAQ)

Q: Can IEG1-1-63-20.0-01-V be used as a direct replacement for MM1-B-34-620-1-2BA-B-C?

A: Yes. Both parts are rated for 20A at 250V AC and 80V DC with identical magnetic hydraulic delay operation, lever actuation, and single-pole configuration. Electrical and mechanical compatibility is complete.

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

A: Both series meet identical electrical specifications. The IEG series holds CSA and TUV certifications in addition to UL1077, while the IEL series certifications vary by specific part number. Series designation reflects internal design architecture and manufacturer-specific qualification standards, not functional performance.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitutes carry RoHS compliance status. The primary part is ROHS3 compliant, while all substitutes are RoHS compliant, meeting equivalent environmental standards.

Q: Does packaging format affect electrical performance?

A: No. The primary part is packaged individually (packaging designation: -), while substitutes are supplied in bulk format. Packaging format does not alter electrical characteristics, voltage ratings, current capacity, or operational performance.

Q: Which substitute has the highest inventory availability?

A: IELK1-1-72-20.0-01-V maintains 1212 units in stock, representing the highest available inventory among all listed substitutes.

Q: Are there approval agency differences that affect application suitability?

A: Yes. IEG1-1-63-20.0-01-V and IEG6-1-72-20.0-01-V hold CSA and TUV certifications, providing broader regulatory acceptance for international markets. IEL1-1-51-20.0-01-V and IELK1-1-72-20.0-01-V carry more limited certification profiles. Application requirements should determine certification necessity.

Q: What is Moisture Sensitivity Level 1 (Unlimited)?

A: MSL 1 (Unlimited) indicates the component has no moisture sensitivity restrictions. Storage, handling, and assembly do not require controlled humidity environments or desiccant packaging.