RA1066ASK Equivalent & Substitute Parts

Part Overview

The RA1066ASK is a rocker switch manufactured by E-Switch, designed for SPST (Single Pole Single Throw) on-off applications at 10A AC 125V. This component features a panel mount, snap-in configuration with a concave black actuator and solder lug termination. The product is currently obsolete, making identification of suitable substitute components essential for ongoing maintenance, repair, and new design implementations where equivalent functionality is required.

Substiute Parts

RA1066ASK

E-SwitchIn Stock: 1043RA1066ASK Datasheet

Current PartRFQ

PRASA1-16L-BB0BW

TE Connectivity ALCOSWITCH SwitchesIn Stock: 1108PRASA1-16L-BB0BW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RA1066ASK is determined by strict compatibility across the following critical parameters:

Mandatory Matching Parameters:

• Circuit configuration (SPST)
• Switch function (On-Off)
• Voltage rating (125V AC minimum)
• Mounting type (Panel Mount, Snap-In)
• Panel cutout dimensions (19.20mm x 13.00mm)
• Termination style (Solder Lug)
• Actuator type (Concave)
• Actuator color (Black)

Allowable Variation Parameters:

• Current rating: Substitute parts may exceed the 10A specification, provided they maintain 125V AC rating and identical mechanical/electrical interfaces
• Mechanical and electrical life cycles: Substitute parts may exceed the original specifications
• Operating temperature range: Substitute parts may provide extended temperature operation
• Ingress protection: Substitute parts may provide enhanced protection ratings
• Approval agencies: Substitute parts must maintain equivalent or superior certification standards

The PRASA1-16L-BB0BW from TE Connectivity ALCOSWITCH Switches qualifies as a direct substitute based on matching all mandatory parameters while exceeding performance specifications in current capacity (16A vs. 10A) and mechanical durability (100,000 cycles vs. 25,000 cycles).

Parameter Comparison

Engineering Selection Recommendations

The PRASA1-16L-BB0BW is a qualified substitute for the RA1066ASK based on the following engineering criteria:

Functional Equivalence: Both components provide identical SPST on-off switching functionality at 125V AC with matching mechanical interfaces, panel cutout dimensions, and actuator characteristics.

Current Capacity: The substitute component is rated for 16A AC, exceeding the original 10A specification. This provides additional margin for applications operating at or below the original 10A design point.

Mechanical Durability: The substitute component offers 100,000 mechanical cycles compared to the original 25,000 cycles, providing extended service life in high-cycle applications.

Electrical Life Consideration: The substitute component specifies 6,000 electrical cycles versus the original 10,000 cycles. Applications requiring the full 10,000-cycle electrical life specification should evaluate this parameter against actual operational requirements.

Regulatory Compliance: The substitute maintains UL and VDE certifications, which are the primary approval agencies for North American and European markets. The original component included additional regional certifications (CSA, DEMKO, FIMKO, NEMKO, SEMKO) that are not carried by the substitute. Applications requiring these specific regional certifications should be evaluated separately.

Product Availability: The substitute component is in active production with confirmed inventory availability, whereas the original component is obsolete.

Frequently Asked Questions (FAQ)

Q: Can the PRASA1-16L-BB0BW be used as a direct replacement for the RA1066ASK in existing designs?

A: Yes, the PRASA1-16L-BB0BW is mechanically and electrically compatible with the RA1066ASK. The identical panel cutout dimensions (19.20mm x 13.00mm), mounting type (snap-in), and solder lug termination allow direct substitution in existing panel layouts and PCB designs without modification.

Q: What is the significance of the higher current rating (16A vs. 10A) on the substitute part?

A: The 16A rating on the PRASA1-16L-BB0BW indicates the maximum current the switch can safely handle. For applications designed for 10A operation, the substitute component provides additional current capacity margin without affecting performance or reliability at the lower current level.

Q: Does the lower electrical life rating (6,000 cycles vs. 10,000 cycles) on the substitute part affect compatibility?

A: The electrical life specification indicates the number of switching cycles at rated voltage and current before electrical degradation occurs. Applications operating below 10,000 electrical cycles are unaffected. Applications requiring operation at or above 10,000 electrical cycles should evaluate actual duty cycle requirements against this specification.

Q: Are the approval certifications equivalent between the two components?

A: The substitute component maintains UL and VDE certifications, which are the primary standards for North American and European regulatory compliance. The original component included additional regional certifications (CSA, DEMKO, FIMKO, NEMKO, SEMKO). Applications requiring these specific regional certifications should confirm substitute acceptability with regional authorities or equipment manufacturers.

Q: What is the advantage of the dust-proof ingress protection on the substitute part?

A: The dust-proof rating on the PRASA1-16L-BB0BW provides enhanced environmental protection compared to the original component. This is beneficial in applications exposed to dust, debris, or contaminated environments, though it does not affect compatibility in standard indoor panel-mount applications.

Q: Can the substitute part be used in applications requiring the original component's extended temperature range?

A: The substitute component specifies an operating temperature range of -20°C to 85°C. The original component does not specify an operating temperature range. Applications requiring operation outside the -20°C to 85°C range should be evaluated separately.