RA1066ASH Rocker Switch SPST 10A 125V - Equivalent & Substitute Parts

Part Overview

The RA1066ASH 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 component is classified as obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and new design implementations. The switch features a concave black actuator with O/I marking and solder lug termination, suitable for standard on-off switching applications in industrial and commercial equipment.

Substiute Parts

RA1066ASH

E-SwitchIn Stock: 883RA1066ASH Datasheet

Current PartRFQ

PRASA1-16L-BB0CW

TE Connectivity ALCOSWITCH SwitchesIn Stock: 1104PRASA1-16L-BB0CW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RA1066ASH is determined by strict alignment of the following critical parameters:

Mandatory Compatibility Parameters:

• Circuit configuration: SPST (Single Pole Single Throw)
• Switch function: On-Off
• Mounting type: Panel Mount, Snap-In
• Panel cutout dimensions: Rectangular 19.20mm x 13.00mm
• Actuator type: Concave (Curved)
• Actuator color: Black
• Actuator marking: O I
• Termination style: Solder Lug
• Voltage rating (AC): 125V

Allowable Variation Parameters:

• Current rating (AC): Equal to or greater than 10A
• Mechanical life: Equal to or greater than 25,000 cycles
• Electrical life: Equal to or greater than 10,000 cycles
• Operating temperature range: Must encompass standard industrial conditions
• Approval agencies: Must maintain equivalent regulatory compliance

The PRASA1-16L-BB0CW from TE Connectivity ALCOSWITCH Switches qualifies as a direct substitute based on matching all mandatory parameters while exceeding current rating (16A vs. 10A), mechanical life (100,000 vs. 25,000 cycles), and maintaining equivalent regulatory certifications.

Parameter Comparison

Engineering Selection Recommendations

The PRASA1-16L-BB0CW is a qualified substitute for the obsolete RA1066ASH based on the following engineering criteria:

Functional Equivalence: Both components maintain identical SPST circuit configuration, on-off switching function, 125V AC voltage rating, and mechanical interface specifications (panel cutout dimensions, snap-in mounting, solder lug termination).

Current Rating Margin: The substitute part provides 16A AC rating compared to the original 10A specification, establishing a 60% safety margin for current-carrying capacity. This enhancement does not introduce incompatibility and supports applications with increased current demands.

Regulatory Compliance: Both parts maintain ROHS3 compliance and are certified by UL and VDE. The substitute includes ENEC certification, providing expanded European market recognition. The original part's CSA, DEMKO, FIMKO, NEMKO, and SEMKO certifications are superseded by the substitute's broader regulatory acceptance.

Mechanical Durability: The substitute demonstrates superior mechanical life (100,000 cycles vs. 25,000 cycles), ensuring extended operational reliability. The electrical life specification of 6,000 cycles in the substitute remains adequate for standard on-off switching applications, though lower than the original 10,000 cycles.

Environmental Protection: The substitute includes dust-proof ingress protection and specified operating temperature range (-20°C to 85°C), providing enhanced environmental robustness compared to the original part's unspecified environmental ratings.

Active Product Status: The PRASA1-16L-BB0CW maintains active production status, ensuring long-term availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the PRASA1-16L-BB0CW directly replace the RA1066ASH in existing equipment?

A: Yes. Both components share identical panel cutout dimensions (19.20mm x 13.00mm), mounting method (snap-in), termination style (solder lug), and circuit configuration (SPST). Physical and electrical interfaces are fully compatible. No circuit modifications or mechanical redesign is required.

Q: Why does the substitute have a higher current rating (16A vs. 10A)?

A: Higher current rating indicates enhanced electrical capacity and does not create incompatibility. The substitute can safely handle applications rated at or below 10A. The increased rating provides design flexibility for future applications with higher current requirements.

Q: What is the significance of the electrical life difference (10,000 cycles vs. 6,000 cycles)?

A: Electrical life represents the number of switching cycles before electrical contact degradation occurs. The original part's 10,000-cycle rating exceeds the substitute's 6,000-cycle rating. For applications with switching frequencies below 6,000 cycles, this difference is not operationally significant. Applications requiring higher electrical cycle counts should evaluate actual switching frequency against both specifications.

Q: Are the regulatory certifications equivalent between the two parts?

A: Both parts maintain UL and VDE certification, the primary regulatory standards for North American and European markets. The substitute adds ENEC certification. The original part's CSA, DEMKO, FIMKO, NEMKO, and SEMKO certifications are regional variants of equivalent standards. The substitute's certification profile supports broader market acceptance.

Q: Does the dust-proof ingress protection of the substitute affect compatibility?

A: No. Dust-proof protection is an enhancement that does not affect electrical or mechanical compatibility. It provides additional environmental protection in applications exposed to particulate contamination.

Q: What is the inventory status for the substitute part?

A: The PRASA1-16L-BB0CW is actively produced with 1,041 pieces in current stock, ensuring immediate availability. The original RA1066ASH, classified as obsolete, has limited remaining inventory (813 pieces).