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

Part Overview

The MM1-B-34-620-1-1FA-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 is active and maintains 990 units in current inventory stock.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when alternative sourcing is required for supply chain optimization, or when design flexibility permits selection from multiple qualified manufacturers. Sensata-Airpax manufactures several parametrically equivalent alternatives that satisfy the same electrical and mechanical specifications.

Substiute Parts

MM1-B-34-620-1-1FA-B-C

Carling TechnologiesIn Stock: 1053MM1-B-34-620-1-1FA-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-34-620-1-1FA-B-C is determined by matching the following critical parameters:

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

All substitute parts listed below satisfy these parameters identically. Differences in manufacturer series designation (IEG, IEL, IELK, IUG) and base product numbers reflect internal design variations within each manufacturer's product line but do not affect functional equivalence for the specified electrical and mechanical requirements.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts are active products with current manufacturing status. Selection among equivalent options may be based on the following factors:

Regulatory Compliance: The MM1-B-34-620-1-1FA-B-C carries CCC, CSA, and UL1077 approvals. 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

Environmental Compliance: All substitute parts are RoHS Compliant and REACH Unaffected (where specified). The primary part is ROHS3 Compliant.

Inventory Availability: All substitute parts maintain active inventory levels ranging from 919 to 1212 units.

Packaging: The primary part is supplied with unspecified packaging. Substitute parts are supplied in bulk packaging, with the exception of IUG1-1-62-30.0-CQ-01, which has unspecified packaging.

Frequently Asked Questions (FAQ)

Q: What makes these parts functionally equivalent to the MM1-B-34-620-1-1FA-B-C?

A: All substitute parts match the critical electrical and mechanical specifications: 20A current rating, 250V AC and 80V DC voltage ratings, magnetic hydraulic delay breaker type, single-pole configuration, lever actuation, and panel-mount installation. These parameters define the functional requirements for direct substitution.

Q: Are there differences in approval certifications between the primary part and substitutes?

A: Yes. The primary part carries CCC, CSA, and UL1077 approvals. Substitute parts carry varying certifications. IEG1-1-63-20.0-01-V and IEG6-1-72-20.0-01-V include CSA, TUV, and UL1077. IELK1-1-72-20.0-01-V carries UL1077. IEL1-1-51-20.0-01-V and IUG1-1-62-30.0-CQ-01 have no approval agencies specified in the provided data. Application requirements determine whether specific certifications are mandatory.

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

A: Both series are manufactured by Sensata-Airpax and satisfy identical electrical and mechanical parameters. The series designation reflects internal product line organization within the manufacturer's catalog. No functional difference exists for the specified 20A, 250V AC, 80V DC application.

Q: Can I use IUG1-1-62-30.0-CQ-01 as a direct replacement?

A: IUG1-1-62-30.0-CQ-01 matches all critical electrical and mechanical parameters. However, approval agency information is not provided in the available data. Verify that any required certifications for your application are satisfied before selection.

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

A: All Sensata-Airpax substitute parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Are there packaging differences I should consider?

A: The primary part and IUG1-1-62-30.0-CQ-01 have unspecified packaging. All other Sensata-Airpax substitutes are supplied in bulk packaging. Confirm packaging requirements with your procurement process.