Circuit Breaker 203-2-1-62-103-A-2-1 Equivalent & Substitute Parts

Part Overview

The Sensata-Airpax 203-2-1-62-103-A-2-1 is a magnetic circuit breaker rated for 10A at 250V AC / 32V DC with rocker panel mount actuation and neon illumination. This component is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product line. Organizations using this breaker in legacy systems or requiring replacement units must identify functionally equivalent alternatives that maintain the same electrical and mechanical specifications.

Substiute Parts

203-2-1-62-103-A-2-1

Sensata-AirpaxIn Stock: 972203-2-1-62-103-A-2-1 Datasheet

Current PartRFQ

203-2-1-62-103-4-1-1

Sensata Technologies – AirpaxIn Stock: 1194203-2-1-62-103-4-1-1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 203-2-1-62-103-A-2-1 is determined by strict equivalence across the following critical parameters:

• Current Rating: 10A
• Voltage Rating: 250V AC / 32V DC
• Breaker Type: Magnetic
• Mounting Configuration: Panel Mount with Rocker Actuation
• Illumination: Neon at 120V Nominal
• Approval Certification: UL1077
• Series Compatibility: 203 Base Product Number (203-2-1-62)

The substitute part 203-2-1-62-103-4-1-1 maintains identical electrical ratings, mechanical mounting, and functional characteristics. Both parts share the same base product number (203-2-1-62), confirming design compatibility within the 203 series platform.

Parameter Comparison

Engineering Selection Recommendations

The 203-2-1-62-103-4-1-1 is a direct parametric equivalent to the 203-2-1-62-103-A-2-1. Both components are classified as Not For New Designs, reflecting their legacy status within the Sensata-Airpax product portfolio. Selection between these parts should be based on inventory availability and lead time requirements, as they are electrically and mechanically interchangeable.

Both parts maintain UL1077 certification and RoHS compliance, ensuring regulatory alignment for applications requiring these standards. The identical current and voltage ratings, mounting configuration, and illumination specifications confirm functional compatibility in existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the 203-2-1-62-103-4-1-1 be used as a direct replacement for the 203-2-1-62-103-A-2-1?

A: Yes. Both parts share identical electrical ratings (10A, 250V AC / 32V DC), magnetic breaker type, panel mount configuration with rocker actuation, neon illumination at 120V nominal, and UL1077 certification. They are parametrically equivalent and mechanically compatible.

Q: What determines substitution eligibility for this circuit breaker?

A: Substitution is determined by matching current rating (10A), voltage ratings (250V AC / 32V DC), breaker type (magnetic), mounting type (panel mount), actuator type (rocker), pole count (1), illumination type (neon at 120V), and approval certification (UL1077). All these parameters must align for functional equivalence.

Q: Are there packaging differences between these parts?

A: Both parts are supplied in bulk packaging. Packaging format does not affect electrical or mechanical compatibility.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the 203-2-1-62-103-A-2-1 and 203-2-1-62-103-4-1-1 are UL1077 certified and RoHS compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: Why are both parts marked as Not For New Designs?

A: This designation indicates that Sensata-Airpax has superseded these models in their current product line. For new circuit designs, consultation with the manufacturer regarding current-generation alternatives is recommended. However, these parts remain suitable for legacy system maintenance and replacement applications.