Phoenix Contact 0902373 Circuit Breaker - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 0902373 is a thermal-magnetic circuit breaker rated for 10A at 480V AC, designed for DIN rail mounting with a lever actuator and three poles. 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

0902373

Phoenix ContactIn Stock: 9520902373 Datasheet

Current PartRFQ

1020023

Phoenix ContactIn Stock: 9331020023 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Phoenix Contact 0902373 is determined by the following critical parameters:

• Current Rating: 10A (exact match required)
• Breaker Type: Thermal Magnetic (exact match required)
• Number of Poles: 3 (exact match required)
• Mounting Type: DIN Rail (exact match required)
• Actuator Type: Lever (exact match required)
• Manufacturer: Phoenix Contact (same manufacturer preferred for consistency)

The substitute part 1020023 matches all critical electrical and mechanical parameters. However, the voltage rating differs: the main part operates at 480V AC, while the substitute operates at 277V AC. This voltage difference represents a functional limitation that must be evaluated based on the specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 1020023 is an active product with ROHS3 compliance, providing supply continuity for the obsolete 0902373. Both components share identical current ratings, pole configuration, mounting methodology, and actuator design. The primary distinction is the voltage rating: 480V for the original part versus 277V for the substitute.

Selection of the 1020023 as a replacement is contingent upon the application operating at 277V AC. If the system requires 480V AC operation, the 1020023 does not provide functional equivalence and alternative solutions must be pursued.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 1020023 directly replace the 0902373 in all applications?

A: Direct replacement is limited by voltage rating compatibility. The 1020023 operates at 277V AC, while the 0902373 operates at 480V AC. Substitution is valid only for systems designed for 277V AC operation.

Q: What are the critical parameters for thermal-magnetic circuit breaker substitution?

A: Current rating, voltage rating, number of poles, breaker type, mounting type, and actuator type must all match the original specification. Deviation in any of these parameters results in functional incompatibility.

Q: Why is the 0902373 classified as obsolete?

A: Product status reflects manufacturer discontinuation. The active equivalent 1020023 provides continued access to Phoenix Contact thermal-magnetic 10A, 3-pole, lever-actuated DIN rail circuit breakers, though at a different voltage rating.

Q: Are both parts ROHS3 compliant?

A: Yes, both the 0902373 and 1020023 are ROHS3 compliant, meeting environmental regulatory requirements for electronic component manufacturing.

Q: What packaging is available for the substitute part?

A: The Phoenix Contact 1020023 is supplied in box packaging, as opposed to the unspecified packaging of the obsolete 0902373.