Weidmüller 9925790000 Circuit Breaker - Equivalent & Substitute Parts

Part Overview

The Weidmüller 9925790000 is a thermal magnetic circuit breaker rated for 50A at 480V AC and 110V DC, designed for DIN rail mounting with lever actuation. This component is classified as obsolete, necessitating identification of active equivalent models to maintain system functionality and ensure continued availability for replacement and new installations.

Substiute Parts

9925790000

WeidmüllerIn Stock: 8829925790000 Datasheet

Current PartRFQ

2480450000

WeidmüllerIn Stock: 9932480450000 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Weidmüller 2480450000 qualifies as a direct substitute based on the following critical parameters:

• Current Rating: 50A (identical)
• Voltage Rating - AC: 480V (identical)
• Mounting Type: DIN Rail (identical)
• Actuator Type: Lever (identical)
• Number of Poles: 2 (identical)
• Breaker Type: Thermal Magnetic (identical)
• Voltage Rating - DC: 125V (exceeds minimum requirement of 110V DC)

The substitute part operates within the same electrical specifications and mechanical form factor, with enhanced DC voltage capability that maintains backward compatibility.

Parameter Comparison

Engineering Selection Recommendations

The Weidmüller 2480450000 is the active equivalent for the obsolete 9925790000. Selection of the substitute part is based on:

• Identical current and AC voltage ratings ensure equivalent load protection characteristics
• Enhanced DC voltage rating (125V vs. 110V) provides operational margin without compromising compatibility
• Active product status ensures ongoing availability and manufacturer support
• Compliance certifications (CE, CSA C22.2 No 5, CSA C22.2 No 235, TUV, UL1077, VDE) confirm regulatory acceptance
• RoHS compliance of the substitute part aligns with current environmental standards
• Identical mechanical and electrical form factor enables direct replacement in DIN rail installations

Frequently Asked Questions (FAQ)

Q: Can the 2480450000 directly replace the 9925790000 in existing installations?

A: Yes. Both parts share identical current ratings (50A), AC voltage ratings (480V), mounting configuration (DIN rail), pole count (2), and actuator type (lever). The substitute's higher DC voltage rating (125V) is compatible with systems designed for 110V DC operation.

Q: What is the significance of the DC voltage difference between the two parts?

A: The 2480450000 is rated for 125V DC compared to the 9925790000's 110V DC rating. This represents an increase in DC voltage capability that maintains full backward compatibility with applications requiring 110V DC protection.

Q: Why is the 9925790000 classified as obsolete?

A: Obsolete status indicates the part is no longer manufactured. The 2480450000 from the active MCB 1077 series represents Weidmüller's current offering for this protection class and specification range.

Q: Are there packaging differences between these parts?

A: The 9925790000 packaging is unspecified, while the 2480450000 is supplied in bulk packaging. This does not affect electrical or mechanical compatibility.

Q: What certifications apply to the substitute part?

A: The 2480450000 carries CE, CSA C22.2 No 5, CSA C22.2 No 235, TUV, UL1077, and VDE certifications, confirming compliance with international safety and performance standards.