Circuit Breaker Thermal Magnetic 3A Lever DIN Rail - Phoenix Contact 0902043

Part Overview

The Phoenix Contact 0902043 is a thermal-magnetic circuit breaker rated for 3A with lever actuation, designed for DIN rail mounting. This component is classified as obsolete, necessitating identification of active substitute models to maintain system functionality and ensure continued availability for new installations and replacements.

Substiute Parts

0902043

Phoenix ContactIn Stock: 11610902043 Datasheet

Current PartRFQ

1019974

Phoenix ContactIn Stock: 11541019974 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Phoenix Contact 0902043 is determined by the following critical parameters:

• Current Rating: 3A (exact match required)
• Breaker Type: Thermal Magnetic (exact match required)
• Mounting Type: DIN Rail (exact match required)
• Actuator Type: Lever (exact match required)
• Number of Poles: 1 (exact match required)
• Manufacturer: Phoenix Contact (same manufacturer preferred for consistency)
• Product Status: Active status required for ongoing availability

The substitute part Phoenix Contact 1019974 satisfies all critical parameters and is classified as active, making it a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 1019974 is the qualified substitute for the obsolete 0902043. Both components share identical functional specifications across all critical parameters: 3A current rating, thermal-magnetic protection, lever actuation, single-pole configuration, and DIN rail mounting.

The 1019974 offers enhanced compliance status (ROHS3 versus RoHS Compliant) and is actively manufactured, ensuring long-term availability and supply chain continuity. The specified voltage ratings (277 V AC, 60 V DC) on the 1019974 provide additional operational clarity compared to the unspecified ratings on the original part.

Selection of the 1019974 is supported by identical ECCN and HTSUS classifications, confirming regulatory equivalence for export and tariff purposes.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 1019974 directly replace the 0902043 in existing installations?

A: Yes. Both components are identical in current rating (3A), breaker type (thermal-magnetic), mounting configuration (DIN rail), actuator mechanism (lever), and pole count (1). The 1019974 is the active production equivalent.

Q: What is the significance of the series designation change from TMC to TMC 7?

A: The series designation reflects product line evolution within Phoenix Contact's thermal-magnetic breaker portfolio. The TMC 7 series represents the current generation while maintaining functional compatibility with the original TMC series specifications.

Q: Are there voltage rating differences between the two parts?

A: The 1019974 specifies 277 V AC and 60 V DC ratings. The 0902043 does not include voltage specifications in the available data. The 1019974 voltage ratings define the operational envelope for the substitute part and should be verified against system requirements.

Q: Does the packaging format affect substitution eligibility?

A: Packaging format (box versus unspecified) does not affect electrical or mechanical compatibility. Packaging is a logistics consideration and does not impact functional substitution.

Q: Are both parts RoHS compliant?

A: Yes. The 0902043 is RoHS Compliant, and the 1019974 is ROHS3 Compliant. Both meet RoHS requirements; the 1019974 meets the more recent ROHS3 standard.