ATR20-A-63S-WB2-B-5.0A-2 Equivalent & Substitute Parts

Part Overview

The ATR20-A-63S-WB2-B-5.0A-2 is a thermal circuit breaker manufactured by Sensata-Airpax, rated for 5A at 250V AC and 50V DC with push-to-reset panel mount actuation. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance, repairs, and new designs requiring compatible thermal protection functionality.

Substiute Parts

ATR20-A-63S-WB2-B-5.0A-2

Sensata-AirpaxIn Stock: 1080ATR20-A-63S-WB2-B-5.0A-2 Datasheet

Current PartRFQ

W57-XB1A7A10-5

TE Connectivity Potter & Brumfield RelaysIn Stock: 3146W57-XB1A7A10-5 Datasheet

DirectRFQ

W58-XB1A4A-5

TE Connectivity Potter & Brumfield RelaysIn Stock: 7462W58-XB1A4A-5 Datasheet

Parametric EquivalentRFQ

W58-XC4C12A-5

TE Connectivity Potter & Brumfield RelaysIn Stock: 1168W58-XC4C12A-5 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for thermal circuit breakers is determined by electrical and mechanical parameter alignment. The following criteria establish valid equivalency:

Primary Substitution Criteria:

• Breaker Type: Thermal
• Current Rating: 5A
• Voltage Rating - AC: 250V
• Voltage Rating - DC: 50V
• Actuator Type: Push to Reset
• Mounting Type: Panel Mount
• Number of Poles: 1

All substitute parts listed meet these core electrical and mechanical requirements. Substitute parts are grouped by product status and compliance certifications, which determine their suitability for different application contexts.

Parameter Comparison

Engineering Selection Recommendations

W58-XB1A4A-5 is the primary substitute for the ATR20-A-63S-WB2-B-5.0A-2. This part provides complete electrical and mechanical parameter alignment, including 50V DC voltage rating. The W58-XB1A4A-5 carries Active product status, ROHS3 compliance, and REACH Unaffected designation, supporting long-term availability and regulatory compliance in new designs and production environments.

W58-XC4C12A-5 is an alternative substitute with identical electrical specifications and Active product status. This part also meets ROHS3 compliance and REACH Unaffected requirements. Selection between W58-XB1A4A-5 and W58-XC4C12A-5 depends on packaging and inventory requirements, as both provide equivalent functional performance.

W57-XB1A7A10-5 is a substitute option with full electrical parameter alignment except for unspecified DC voltage rating. This part carries Active product status and ROHS3 compliance. The W57 series is suitable for applications where 50V DC rating is not a functional requirement. REACH Affected status may require additional regulatory consideration in certain supply chain contexts.

Frequently Asked Questions (FAQ)

Q: Can W57-XB1A7A10-5 be used in place of ATR20-A-63S-WB2-B-5.0A-2 in all applications?

A: W57-XB1A7A10-5 meets all specified electrical and mechanical parameters except DC voltage rating is not documented. Use this substitute only in applications where 50V DC rating is not required. For applications requiring confirmed 50V DC operation, select W58-XB1A4A-5 or W58-XC4C12A-5.

Q: What is the difference between W58-XB1A4A-5 and W58-XC4C12A-5?

A: Both parts provide identical electrical specifications and Active product status. The primary differences are Moisture Sensitivity Level designation (W58-XB1A4A-5 is 1 Unlimited; W58-XC4C12A-5 is Not Applicable) and packaging configuration. Selection depends on specific environmental and packaging requirements for your application.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all three substitute parts carry ROHS3 Compliant designation. The original ATR20-A-63S-WB2-B-5.0A-2 RoHS status is not specified.

Q: What does REACH Affected versus REACH Unaffected mean for part selection?

A: REACH Unaffected status (W58-XB1A4A-5 and W58-XC4C12A-5) indicates the part does not contain substances of very high concern requiring additional regulatory documentation. REACH Affected status (W57-XB1A7A10-5) may require compliance documentation depending on end-use market and supply chain requirements.

Q: Why is the original ATR20-A-63S-WB2-B-5.0A-2 marked as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. Active substitute parts from TE Connectivity Potter & Brumfield Relays provide equivalent functionality with ongoing manufacturing support and availability.