Circuit Breaker Thermal Magnetic 500mA 250VAC 80VDC Phoenix Contact 5531257

Part Overview

The Phoenix Contact 5531257 is a thermal magnetic circuit breaker rated for 500mA at 250V AC and 80V DC, designed for DIN rail mounting. This two-pole breaker features push-to-reset actuation and is classified as an active product with full RoHS compliance. Circuit breakers of this specification are essential for overcurrent protection in industrial control systems, automation equipment, and low-voltage distribution applications where dual voltage operation is required.

Substiute Parts

5531257

Phoenix ContactIn Stock: 11425531257 Datasheet

Current PartRFQ

7940102279

WeidmüllerIn Stock: 11077940102279 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The Weidmüller 7940102279 qualifies as a parametric equivalent based on matching all critical electrical and mechanical specifications. Substitution is valid when the following parameters are identical:

• Current Rating: 500mA
• Voltage Rating - AC: 250V
• Voltage Rating - DC: 80V
• Breaker Type: Thermal Magnetic
• Number of Poles: 2
• Mounting Type: DIN Rail
• Actuator Type: Push to Reset
• RoHS Compliance: Yes

Both parts are active products with current manufacturing status and identical functional performance characteristics for overcurrent protection applications.

Parameter Comparison

Engineering Selection Recommendations

Both the Phoenix Contact 5531257 and Weidmüller 7940102279 are active products with current manufacturing support and full RoHS compliance. The Weidmüller 7940102279 carries additional regulatory approvals including CSA C22.2 No 235, UL1077, and VDE certification. Selection between these parts should be based on supply chain availability, lead time requirements, and any system-specific certification mandates. Both parts are electrically and mechanically interchangeable for applications requiring 500mA thermal magnetic protection at 250V AC / 80V DC with DIN rail mounting.

Frequently Asked Questions (FAQ)

Q: Can the Weidmüller 7940102279 directly replace the Phoenix Contact 5531257?

A: Yes. Both parts share identical electrical ratings (500mA, 250V AC, 80V DC), breaker type (thermal magnetic), pole configuration (2-pole), mounting method (DIN rail), and actuation mechanism (push to reset). They are parametric equivalents.

Q: What are the critical parameters that determine 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. Both parts meet these criteria.

Q: Are there any compliance differences between these parts?

A: The Weidmüller 7940102279 includes CSA C22.2 No 235, UL1077, and VDE approvals. Both parts are RoHS compliant. System requirements may dictate which certifications are necessary for your application.

Q: What is the difference between the TMC42 and CB4200 series designations?

A: These are manufacturer-specific series identifiers. The TMC42 is Phoenix Contact's designation, and CB4200 is Weidmüller's designation. Series differences do not affect electrical or mechanical compatibility when all functional parameters match.

Q: Are both parts available in the same packaging format?

A: Both parts are supplied in bulk packaging. Confirm specific packaging requirements with your procurement process.