APL1-1-61-103 Equivalent & Substitute Parts

Part Overview

The APL1-1-61-103 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 designed for AC and DC circuit protection applications. The product is currently obsolete, making identification of functionally equivalent alternatives essential for maintenance, repair, and system continuity in installations where this breaker is specified or currently deployed.

Substiute Parts

APL1-1-61-103

Sensata-AirpaxIn Stock: 741APL1-1-61-103 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 APL1-1-61-103 is determined by strict equivalence across the following critical parameters:

• Breaker Type: Magnetic (Hydraulic Delay) protection mechanism
• Current Rating: 10A nominal trip current
• Voltage Rating - AC: 277V minimum AC rating
• Number of Poles: Single-pole configuration
• Actuator Type: Lever manual actuation
• Mounting Type: Panel mount form factor

The substitute part W91-X112-10 meets all these criteria. Substitution is valid only when all parameters align with the original specification. Deviations in any of these parameters result in functional incompatibility.

Parameter Comparison

Engineering Selection Recommendations

The W91-X112-10 manufactured by TE Connectivity Potter & Brumfield Relays is the direct functional equivalent for the obsolete APL1-1-61-103. Selection of this substitute is based on:

• Complete parameter alignment across all critical electrical and mechanical specifications
• Active product status ensuring ongoing availability and supply chain continuity
• ROHS3 compliance providing enhanced environmental and material standards
• Identical form factor and mounting compatibility for direct installation in existing panel configurations
• Equivalent magnetic-hydraulic delay protection mechanism and 10A/277V AC rating

The substitute part is suitable for direct replacement in applications where the APL1-1-61-103 is currently specified or installed.

Frequently Asked Questions (FAQ)

Q: Can the W91-X112-10 be used as a direct replacement for the APL1-1-61-103?

A: Yes. Both parts share identical electrical ratings (10A, 277V AC), protection mechanism (magnetic-hydraulic delay), pole configuration (single-pole), actuator type (lever), and mounting type (panel mount). Direct substitution is valid.

Q: What is the significance of the product status difference (Obsolete vs. Active)?

A: The APL1-1-61-103 is no longer manufactured. The W91-X112-10 is in active production, ensuring availability for new installations and replacement stock. This makes the substitute the appropriate choice for ongoing system support.

Q: Does the ROHS3 compliance of the W91-X112-10 affect compatibility?

A: No. ROHS3 compliance is an enhancement that does not alter electrical or mechanical function. The substitute meets or exceeds the environmental standards of the original part.

Q: Are there packaging differences between these parts?

A: The APL1-1-61-103 is listed with packaging designation "-" (not specified). The W91-X112-10 is supplied in Bulk packaging. Packaging does not affect functional compatibility; verify bulk quantity requirements for your procurement process.

Q: What is the REACH status difference, and does it matter for substitution?

A: The original part is REACH Unaffected; the substitute is REACH Affected. This indicates the substitute is subject to REACH regulatory requirements. For applications in REACH-regulated markets, the substitute's compliance status is advantageous. Verify regulatory requirements for your specific application region.