RA1066AFH Rocker Switch SPST 10A 125V - Equivalent & Substitute Parts

Part Overview

The RA1066AFH is an E-Switch rocker switch with SPST (Single Pole Single Throw) configuration, rated for 10A AC at 125V, designed for panel mount snap-in installation. This product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing maintenance, repair, and new design applications where this switch type is required.

Substiute Parts

RA1066AFH

E-SwitchIn Stock: 887RA1066AFH Datasheet

Current PartRFQ

CWSB11AA1F

NKK SwitchesIn Stock: 4122CWSB11AA1F Datasheet

DirectRFQ

PRASA1-16F-BB0CW

TE Connectivity ALCOSWITCH SwitchesIn Stock: 952PRASA1-16F-BB0CW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RA1066AFH are identified based on the following critical parameters that determine functional equivalence:

• Circuit Configuration: SPST (Single Pole Single Throw) - maintains identical switching logic
• Mounting Type: Panel Mount, Snap-In - ensures mechanical compatibility with existing panel cutouts
• Termination Style: Quick Connect - 0.187" (4.7mm) - guarantees electrical connection compatibility
• Actuator Type: Concave (Curved) with O/I marking - preserves user interface consistency
• Panel Cutout Dimensions: Rectangular - 19.20mm x 13.00mm - ensures physical fit without modification

Substitutes may vary in current rating, voltage rating, mechanical life, and electrical life, provided they meet or exceed the application requirements. All identified substitutes maintain ROHS3 compliance and use identical termination and mounting specifications.

Parameter Comparison

Engineering Selection Recommendations

PRASA1-16F-BB0CW (TE Connectivity ALCOSWITCH Switches) is the manufacturer-recommended substitute. This part maintains identical voltage rating (125V AC) and panel cutout dimensions to the RA1066AFH, with higher current capacity (16A vs. 10A), extended mechanical life (100,000 vs. 25,000 cycles), and broader regulatory approvals (ENEC, UL, VDE). Active product status ensures long-term availability and supply chain stability.

CWSB11AA1F (NKK Switches) provides an alternative with higher voltage rating (250V AC) and improved mechanical life (30,000 cycles). The current rating of 6A is lower than the original specification; this substitute is suitable only for applications where the load current does not exceed 6A. Panel cutout dimensions are nominally equivalent (12.90mm vs. 13.00mm height). Active product status supports ongoing procurement.

Both substitutes maintain identical circuit configuration (SPST), mounting type (Panel Mount, Snap-In), termination style (Quick Connect - 0.187"), and actuator characteristics (Concave, Black, O/I marking), ensuring mechanical and electrical compatibility with existing installations.

Frequently Asked Questions (FAQ)

Q: Can CWSB11AA1F replace RA1066AFH in all applications? A: CWSB11AA1F is mechanically and electrically compatible but has a lower current rating (6A vs. 10A). It is suitable only for applications where the AC load current does not exceed 6A at the operating voltage. Verify your circuit current requirements before substitution.

Q: What is the difference between the two substitute parts? A: PRASA1-16F-BB0CW maintains the original 125V AC rating with higher current capacity (16A) and superior mechanical life (100,000 cycles). CWSB11AA1F offers higher voltage rating (250V AC) but lower current capacity (6A). Both are mechanically compatible with the RA1066AFH panel cutout.

Q: Are the panel cutout dimensions identical across all three parts? A: The RA1066AFH and PRASA1-16F-BB0CW share identical panel cutout dimensions (19.20mm x 13.00mm). CWSB11AA1F has a nominal height difference of 0.10mm (12.90mm vs. 13.00mm), which is within typical manufacturing tolerance and does not affect panel mounting compatibility.

Q: Do all substitutes meet the same regulatory approvals as the original? A: All three parts are ROHS3 compliant and carry UL and VDE approvals. The RA1066AFH includes additional certifications (CSA, DEMKO, FIMKO, NEMKO, SEMKO). PRASA1-16F-BB0CW adds ENEC certification. CWSB11AA1F carries cULus certification. Verify that the substitute's approval agencies meet your specific regulatory requirements.

Q: What is the mechanical life difference, and does it matter? A: Mechanical life indicates the number of on-off cycles the switch can withstand. PRASA1-16F-BB0CW (100,000 cycles) significantly exceeds the original (25,000 cycles), providing extended service life. CWSB11AA1F (30,000 cycles) also exceeds the original. Higher mechanical life is beneficial for high-frequency switching applications.

Q: Are the termination connectors compatible? A: All three parts use identical Quick Connect - 0.187" (4.7mm) termination, ensuring direct compatibility with existing wiring harnesses and PCB connectors without modification.