Weidmüller 7940116420 Circuit Breaker Thermal Magnetic 4A 250VAC 80VDC Equivalent & Substitute Parts

Part Overview

The Weidmüller 7940116420 is a thermal magnetic circuit breaker rated for 4A at 250V AC and 80V DC, designed for DIN rail mounting with push-to-reset actuation. This two-pole breaker is part of the CB4200 series and maintains active product status with full regulatory compliance. Finding equivalent substitute parts becomes necessary when managing inventory across multiple supply channels, addressing component availability constraints, or standardizing procurement across distributed manufacturing facilities.

Substiute Parts

7940116420

WeidmüllerIn Stock: 9137940116420 Datasheet

Current PartRFQ

7940102287

WeidmüllerIn Stock: 10837940102287 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Weidmüller 7940116420 is determined by strict equivalence across the following critical parameters:

• Current Rating: 4A (exact match required)
• Voltage Rating - AC: 250V (exact match required)
• Voltage Rating - DC: 80V (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: Push to Reset (exact match required)
• Series: CB4200 (same product family)

The substitute part 7940102287 meets all these criteria, confirming parametric equivalence within the CB4200 series.

Parameter Comparison

Engineering Selection Recommendations

Both the primary part 7940116420 and substitute part 7940102287 are active products from Weidmüller's CB4200 series with identical electrical and mechanical specifications. Both carry equivalent regulatory certifications (CSA C22.2 No 235, UL1077, VDE) and maintain RoHS compliance. Selection between these parts may be based on inventory availability, supply chain logistics, or procurement lead times, as they are functionally and electrically interchangeable for all applications requiring a 4A, 250VAC/80VDC thermal magnetic circuit breaker with two-pole DIN rail configuration.

Frequently Asked Questions (FAQ)

Q: Can part 7940102287 be used as a direct replacement for 7940116420?

A: Yes. Both parts are parametrically identical across all critical specifications: 4A current rating, 250V AC and 80V DC voltage ratings, thermal magnetic operation, two-pole configuration, DIN rail mounting, and push-to-reset actuation. Both carry the same regulatory approvals and RoHS compliance status.

Q: Are there any differences in electrical performance between these two parts?

A: No. The electrical characteristics are identical. Both parts operate within the same current and voltage parameters and employ the same thermal magnetic protection mechanism.

Q: Do both parts have the same regulatory certifications?

A: Yes. Both 7940116420 and 7940102287 carry CSA C22.2 No 235, UL1077, and VDE approvals, ensuring compliance with the same safety and performance standards.

Q: Can these parts be mixed in the same installation?

A: Yes. Since both parts are parametrically equivalent and carry identical certifications, they can be used interchangeably within the same DIN rail assembly or control panel.

Q: What should determine my choice between these two part numbers?

A: Selection should be based on inventory availability, supplier lead times, and procurement cost. No technical or performance differentiation exists between the parts.