Phoenix Contact 1020079 Circuit Breaker 50A Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 1020079 is a thermal magnetic circuit breaker rated for 50A with dual voltage capability (277V AC / 125V DC). This DIN rail-mounted device features a lever actuator and is part of the TMC 7 series. The part is currently active in production with 764 units in stock. Equivalent substitute parts are necessary to ensure supply chain continuity, support procurement flexibility, and provide options when the primary part number becomes unavailable or when inventory constraints require alternative sourcing.

Substiute Parts

1020079

Phoenix ContactIn Stock: 8201020079 Datasheet

Current PartRFQ

1019948

Phoenix ContactIn Stock: 10591019948 Datasheet

Parametric EquivalentRFQ

1020012

Phoenix ContactIn Stock: 11301020012 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for Phoenix Contact TMC 7 series thermal magnetic circuit breakers is determined by exact matching of the following critical parameters:

• Current Rating: 50A (exact match required)
• Voltage Rating - AC: 277V (exact match required)
• Voltage Rating - DC: 125V (exact match required)
• Breaker Type: Thermal Magnetic (exact match required)
• Number of Poles: 2 (exact match required)
• Mounting Type: DIN Rail (exact match required)
• Actuator Type: Lever (exact match required)

Both substitute parts 1019948 and 1020012 meet all critical electrical and mechanical parameters. All three parts belong to the same TMC 7 series and share identical functional specifications, making them fully interchangeable in applications requiring 50A thermal magnetic protection at 277V AC / 125V DC.

Parameter Comparison

Engineering Selection Recommendations

All three part numbers are active products with ROHS3 compliance and identical electrical and mechanical specifications. Selection between 1020079, 1019948, and 1020012 should be based on inventory availability and procurement lead times. Part 1020012 offers the highest current inventory level at 1062 units, followed by 1019948 at 977 units. The main part 1020079 maintains 764 units in stock. All parts are suitable for direct substitution in applications requiring 50A thermal magnetic circuit protection at 277V AC / 125V DC on DIN rail installations.

Frequently Asked Questions (FAQ)

Q: Are parts 1019948 and 1020012 fully interchangeable with 1020079?

A: Yes. All three parts share identical electrical ratings (50A, 277V AC, 125V DC), mechanical specifications (2-pole, lever actuator, DIN rail mount), and belong to the same TMC 7 series. They are functionally equivalent and can be used interchangeably in any application designed for part 1020079.

Q: What parameters must match for substitution eligibility?

A: Current rating, AC voltage rating, DC voltage rating, breaker type, number of poles, mounting type, and actuator type must all match exactly. All three parts meet these requirements.

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

A: All three parts are ROHS3 compliant and carry the same ECCN (EAR99) and HTSUS (8536.20.0040) classifications. The main difference is REACH status: part 1020079 is REACH Affected, while parts 1019948 and 1020012 are REACH Unaffected.

Q: Which part should I select if inventory is a concern?

A: Part 1020012 has the highest inventory at 1062 units, making it the optimal choice for applications requiring immediate availability or bulk orders.

Q: Are there any packaging differences between these parts?

A: No. All three parts are supplied in box packaging with identical specifications.