RA1066AFK Rocker Switch SPST 10A 125V - Equivalent & Substitute Parts

Part Overview

The RA1066AFK is a panel-mount rocker switch manufactured by E-Switch, featuring SPST (Single Pole Single Throw) configuration with 10A AC current rating at 125V. This component is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility through matching circuit topology, mounting interface, and electrical performance within specified operating parameters.

Substiute Parts

RA1066AFK

E-SwitchIn Stock: 973RA1066AFK Datasheet

Current PartRFQ

CWSB11AA2F

NKK SwitchesIn Stock: 17921CWSB11AA2F Datasheet

DirectRFQ

PRASA1-16F-BB0BW

TE Connectivity ALCOSWITCH SwitchesIn Stock: 3796PRASA1-16F-BB0BW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RA1066AFK is determined by the following mandatory parameters:

• Circuit topology: SPST configuration required for functional equivalence
• Mounting interface: Panel Mount, Snap-In with matching 19.20mm x 13.00mm cutout dimensions
• Termination: Quick Connect - 0.187" (4.7mm) connector compatibility
• Actuator design: Concave (Curved) black actuator with O/- marking
• Electrical ratings: Current and voltage ratings must support the application's power requirements
• Regulatory compliance: RoHS3 compliance and relevant approval agencies

Two substitute parts meet these criteria with variations in electrical performance characteristics:

CWSB11AA2F (NKK Switches): Maintains identical mounting, termination, and circuit topology. Electrical ratings differ with 6A at 250V versus the original 10A at 125V specification.

PRASA1-16F-BB0BW (TE Connectivity ALCOSWITCH Switches): Maintains identical mounting, termination, and circuit topology. Electrical ratings differ with 16A at 125V, providing higher current capacity at the original voltage specification.

Parameter Comparison

Engineering Selection Recommendations

PRASA1-16F-BB0BW is the primary substitute for applications requiring direct electrical compatibility at 125V AC. This part maintains the original voltage specification while providing increased current capacity (16A versus 10A), ensuring margin in existing designs. The part is active with broader regulatory approval (ENEC, UL, VDE) and extended mechanical life (100,000 cycles). Panel cutout dimensions match exactly (19.20mm x 13.00mm), enabling direct mechanical interchange without enclosure modification.

CWSB11AA2F is suitable for applications where the 125V specification can be adapted to 250V operation. This part provides higher voltage rating with reduced current capacity (6A versus 10A). The panel cutout dimension variance (12.90mm versus 13.00mm height) requires evaluation for mechanical fit within existing panel apertures. This substitute is appropriate for lower-power switching applications or where higher voltage tolerance is beneficial.

Both substitutes maintain ROHS3 compliance, SPST circuit topology, snap-in mounting, and 0.187" quick-connect termination, ensuring functional compatibility within their respective electrical operating ranges.

Frequently Asked Questions (FAQ)

Q: Can CWSB11AA2F directly replace RA1066AFK in a 125V 10A application?

A: No. CWSB11AA2F is rated for 6A maximum at 250V. Using this part in a 10A 125V circuit would exceed its current rating and create a safety hazard. This substitute is appropriate only for applications requiring 6A or less.

Q: Can PRASA1-16F-BB0BW directly replace RA1066AFK?

A: Yes, for electrical operation. PRASA1-16F-BB0BW maintains 125V AC rating with 16A capacity, exceeding the original 10A requirement. Mechanical compatibility is confirmed through matching panel cutout dimensions (19.20mm x 13.00mm) and identical snap-in mounting and quick-connect termination interfaces.

Q: What is the significance of the panel cutout dimension difference between CWSB11AA2F and the original part?

A: CWSB11AA2F has a panel cutout height of 12.90mm versus the original 13.00mm. This 0.10mm difference may affect mechanical fit depending on panel tolerance specifications. Physical evaluation is necessary before committing to production use.

Q: Are all three parts RoHS3 compliant?

A: Yes. RA1066AFK, CWSB11AA2F, and PRASA1-16F-BB0BW are all ROHS3 compliant, meeting environmental regulatory requirements for new designs.

Q: What are the regulatory approval differences between substitutes?

A: RA1066AFK carries approvals from CSA, DEMKO, FIMKO, NEMKO, SEMKO, UL, and VDE. CWSB11AA2F carries cULus approval. PRASA1-16F-BB0BW carries ENEC, UL, and VDE approvals. Application requirements and regional standards determine which approvals are necessary for your specific use case.

Q: How do mechanical life ratings compare?

A: RA1066AFK specifies 25,000 cycles. CWSB11AA2F provides 30,000 cycles. PRASA1-16F-BB0BW provides 100,000 cycles. Higher cycle ratings indicate extended operational life under repeated switching conditions.