APL1-1-61-203 Equivalent & Substitute Parts

Part Overview

The APL1-1-61-203 is a single-pole circuit breaker with magnetic-hydraulic delay protection, rated for 20A at 277V AC and 65V DC. This component features lever actuation and panel mount configuration, designed for overcurrent protection in industrial and commercial electrical systems. The part is currently obsolete, making equivalent substitutes necessary for system maintenance and new installations where this specific model is no longer available.

Substiute Parts

APL1-1-61-203

Sensata-AirpaxIn Stock: 1221APL1-1-61-203 Datasheet

Current PartRFQ

W91-X1110-20

TE Connectivity Potter & Brumfield RelaysIn Stock: 884W91-X1110-20 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the APL1-1-61-203 is determined by strict equivalence across the following critical parameters:

• Breaker Type: Magnetic (Hydraulic Delay) protection mechanism
• Current Rating: 20A nominal trip current
• Voltage Rating - AC: 277V minimum
• Number of Poles: Single-pole configuration
• Actuator Type: Lever manual operation
• Mounting Type: Panel mount form factor

The W91-X1110-20 meets all these criteria and qualifies as a direct substitute. Both components share identical electrical protection characteristics, mechanical interface requirements, and operational specifications necessary for drop-in replacement in existing installations.

Parameter Comparison

Engineering Selection Recommendations

The W91-X1110-20 is the qualified substitute for the obsolete APL1-1-61-203. Selection is based on:

• Electrical Equivalence: Identical current rating, voltage ratings, and protection mechanism ensure functional compatibility in existing circuits.
• Mechanical Compatibility: Matching pole count, actuator type, and panel mount configuration enable direct installation without mechanical modification.
• Product Status: The W91-X1110-20 maintains active production status, ensuring availability and supply chain continuity.
• Compliance: Both components share identical ECCN and HTSUS classifications. The W91-X1110-20 carries RoHS Compliant certification, meeting modern environmental standards.

Frequently Asked Questions (FAQ)

Q: Can the W91-X1110-20 replace the APL1-1-61-203 in existing installations?

A: Yes. Both components are single-pole, 20A, 277V AC circuit breakers with magnetic-hydraulic delay protection and lever actuation. The identical electrical and mechanical specifications support direct substitution without circuit redesign or panel modification.

Q: What is the significance of the obsolete status for APL1-1-61-203?

A: Obsolete status indicates the manufacturer no longer produces this part. The W91-X1110-20 provides functional continuity for maintenance, repair, and replacement applications where the original part is no longer available.

Q: Are there packaging differences between these parts?

A: The APL1-1-61-203 is listed with unspecified packaging, while the W91-X1110-20 is supplied in bulk packaging. Both are suitable for panel mount installation; packaging differences do not affect electrical or mechanical performance.

Q: How do the compliance certifications compare?

A: Both parts share EAR99 ECCN and 8536.20.0020 HTSUS classifications. The W91-X1110-20 carries RoHS Compliant certification, indicating compliance with current environmental regulations for restricted substances.

Q: Are the voltage ratings identical?

A: The APL1-1-61-203 is rated for 277V AC and 65V DC. The W91-X1110-20 is rated for 277V AC. For applications requiring DC operation at 65V, verify the W91-X1110-20 DC rating against your specific system requirements.