WR18AS/V Equivalent & Substitute Parts

Part Overview

The WR18AS/V is a rocker switch manufactured by NKK Switches, classified as SPDT (Single Pole Double Throw) with a momentary-off-momentary (Mom-Off-Mom) switch function. This panel-mount, snap-in component is rated for 15A at 125V AC and 30V DC, featuring a concave black actuator with solder lug termination and IP67 ingress protection. The WR18AS/V is currently listed as obsolete. Identifying equivalent substitute parts is necessary to maintain design compatibility and ensure continued availability for applications requiring this specific electrical and mechanical configuration.

Substiute Parts

WR18AS/V

NKK SwitchesIn Stock: 867WR18AS/V Datasheet

Current PartRFQ

WR18AS

NKK SwitchesIn Stock: 867WR18AS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the WR18AS/V is determined by strict equivalence across the following critical parameters:

• Circuit configuration (SPDT)
• Switch function (Mom-Off-Mom)
• Current rating (15A AC/DC)
• Voltage ratings (125V AC, 30V DC)
• Mounting type (Panel Mount, Snap-In)
• Termination style (Solder Lug)
• Ingress protection rating (IP67)
• Panel cutout dimensions (34.20mm x 17.20mm)
• Operating temperature range (-25°C to 85°C)
• Mechanical and electrical life specifications

The WR18AS (direct manufacturer part number) meets all substitution criteria as an equivalent part for the WR18AS/V.

Parameter Comparison

Engineering Selection Recommendations

The WR18AS serves as a direct equivalent substitute for the obsolete WR18AS/V. Both parts are manufactured by NKK Switches and maintain identical electrical and mechanical specifications across all critical parameters. The WR18AS is currently in active production status with 789 pieces available in inventory, whereas the WR18AS/V is obsolete with limited stock (776 pieces).

From a compliance perspective, both parts carry EN and UL approvals. The WR18AS additionally provides RoHS3 compliance and REACH unaffected status, meeting current regulatory requirements for new designs and procurement.

The transition from WR18AS/V to WR18AS requires no circuit redesign, PCB layout modification, or panel cutout adjustment, as all mechanical and electrical parameters remain unchanged.

Frequently Asked Questions (FAQ)

Q: Can WR18AS be used as a direct replacement for WR18AS/V in existing applications?

A: Yes. The WR18AS is electrically and mechanically identical to the WR18AS/V across all specified parameters, including circuit configuration, current and voltage ratings, mounting dimensions, and environmental specifications. No design modifications are required.

Q: What is the primary difference between WR18AS/V and WR18AS?

A: The WR18AS/V is obsolete, while the WR18AS is in active production. Both parts are functionally equivalent. The WR18AS includes RoHS3 compliance and REACH unaffected status, reflecting current manufacturing and regulatory standards.

Q: Are the panel cutout dimensions identical?

A: Yes. Both parts require a rectangular panel cutout of 34.20mm x 17.20mm. No mechanical modification to the mounting panel is necessary when substituting WR18AS for WR18AS/V.

Q: Do both parts have the same termination style?

A: Yes. Both the WR18AS/V and WR18AS use solder lug termination, ensuring compatibility with existing PCB designs and soldering processes.

Q: What certifications apply to the WR18AS substitute?

A: The WR18AS carries EN and UL approvals, matching the certifications of the WR18AS/V. Additionally, the WR18AS is RoHS3 compliant and REACH unaffected.