APL1-1-52-103 Equivalent & Substitute Parts

Part Overview

The APL1-1-52-103 is a single-pole circuit breaker with magnetic-hydraulic delay protection, rated for 10A at 277V AC and 65V DC. Manufactured by Sensata-Airpax, this lever-actuated panel mount breaker is classified as obsolete. Due to its discontinued status, identifying equivalent substitute parts is essential for system maintenance, repair, and component replacement in applications requiring identical electrical and mechanical performance characteristics.

Substiute Parts

APL1-1-52-103

Sensata-AirpaxIn Stock: 845APL1-1-52-103 Datasheet

Current PartRFQ

W91-X112-10

TE Connectivity Potter & Brumfield RelaysIn Stock: 1224W91-X112-10 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the APL1-1-52-103 is determined by strict equivalence across the following critical parameters:

• Breaker Type: Magnetic (Hydraulic Delay) protection mechanism
• Current Rating: 10A
• Voltage Rating - AC: 277V
• Mounting Configuration: Panel Mount with Lever actuator
• Pole Configuration: Single-pole (1P)

The substitute part W91-X112-10 satisfies all these criteria. Both parts share identical electrical specifications for current and AC voltage ratings, matching protection characteristics, and mechanical mounting requirements. The substitute maintains the same functional architecture and panel mount interface necessary for direct replacement in existing installations.

Parameter Comparison

Engineering Selection Recommendations

The W91-X112-10 manufactured by TE Connectivity Potter & Brumfield Relays is the designated substitute for the obsolete APL1-1-52-103. This part maintains full electrical and mechanical compatibility across all critical parameters: 10A current rating, 277V AC voltage specification, magnetic-hydraulic delay protection, single-pole configuration, lever actuation, and panel mount interface.

The substitute part carries Active product status, ensuring ongoing availability and supply chain continuity. The W91-X112-10 is ROHS3 compliant, meeting current environmental and regulatory standards for electronic components. While the original part carries REACH Unaffected status and the substitute is REACH Affected, both parts are classified under the same HTSUS code (8536.20.0020) and ECCN designation (EAR99), confirming functional and regulatory equivalence for component selection purposes.

Frequently Asked Questions (FAQ)

Q: Can W91-X112-10 directly replace APL1-1-52-103 in existing installations?

A: Yes. Both parts share identical specifications for current rating (10A), AC voltage (277V), breaker type (magnetic-hydraulic delay), mounting configuration (panel mount), actuator type (lever), and pole count (1P). The mechanical and electrical interfaces are equivalent, enabling direct substitution.

Q: What is the significance of the DC voltage rating difference?

A: The original APL1-1-52-103 specifies 65V DC rating. The W91-X112-10 substitute does not list a DC voltage specification in the provided data. For applications requiring DC operation, the DC voltage capability of the substitute must be confirmed through the manufacturer's detailed technical documentation before deployment.

Q: Why is the APL1-1-52-103 classified as obsolete?

A: Obsolete status indicates the part is no longer manufactured or supported by Sensata-Airpax. The W91-X112-10 substitute, maintained in Active status by TE Connectivity, provides continued availability and supply security for replacement and maintenance applications.

Q: Are there compliance differences between the two parts?

A: The W91-X112-10 is ROHS3 compliant and REACH Affected, reflecting current environmental regulations. The APL1-1-52-103 is REACH Unaffected, indicating it predates certain regulatory frameworks. Both parts share the same ECCN (EAR99) and HTSUS classifications, confirming functional and trade equivalence.

Q: What packaging is available for the substitute part?

A: The W91-X112-10 is supplied in Bulk packaging. The original APL1-1-52-103 packaging specification is not provided in the available data.