WR18ASN/V Equivalent & Substitute Parts

Part Overview

The WR18ASN/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 WR18ASN/V is currently listed as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades.

Substiute Parts

WR18ASN/V

NKK SwitchesIn Stock: 751WR18ASN/V Datasheet

Current PartRFQ

WR18ASN

NKK SwitchesIn Stock: 905WR18ASN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the WR18ASN/V is determined by strict equivalence across the following critical parameters:

• Circuit Configuration: SPDT topology must be maintained
• Switch Function: Mom-Off-Mom operation is required
• Electrical Ratings: 15A (AC/DC), 125V AC, 30V DC minimum
• Mounting Interface: Panel mount, snap-in form factor with 34.20mm x 17.20mm rectangular cutout
• Actuator Specification: Concave curved black actuator
• Termination: Solder lug connection
• Environmental Protection: IP67 rating
• Operating Temperature: -25°C to 85°C range
• Mechanical and Electrical Life: 30,000 cycles mechanical, 10,000 cycles electrical

The WR18ASN (without the "/V" suffix) from NKK Switches meets all these parameters and qualifies as a direct substitute. The primary distinction is product status: WR18ASN/V is obsolete, while WR18ASN is active in production.

Parameter Comparison

Engineering Selection Recommendations

The WR18ASN is the direct substitute for the obsolete WR18ASN/V. Both components are manufactured by NKK Switches within the WR series and maintain identical electrical, mechanical, and environmental specifications. The WR18ASN carries active product status and is currently in production with 863 units in stock, ensuring supply chain continuity. Both parts hold EN and UL approvals, meeting the same regulatory requirements. The WR18ASN additionally carries RoHS3 compliance certification, providing enhanced environmental compliance for new designs. For applications currently using WR18ASN/V, direct substitution with WR18ASN is appropriate without circuit redesign or panel modification.

Frequently Asked Questions (FAQ)

Q: Can WR18ASN replace WR18ASN/V in existing designs? A: Yes. The WR18ASN is a direct substitute. All electrical ratings, mechanical dimensions, mounting interfaces, and environmental specifications are identical. Panel cutout dimensions remain 34.20mm x 17.20mm, requiring no modification to existing enclosures.

Q: What is the difference between WR18ASN/V and WR18ASN? A: The primary difference is product status. WR18ASN/V is obsolete, while WR18ASN is active in production. The "/V" designation in the original part number does not indicate a functional or electrical difference. Both components are SPDT rocker switches with identical 15A/125V AC ratings and Mom-Off-Mom operation.

Q: Are there any compliance differences? A: Both parts hold EN and UL approvals. The WR18ASN additionally carries RoHS3 compliance certification, making it suitable for applications with enhanced environmental requirements.

Q: What is the solder lug termination compatibility? A: Both WR18ASN/V and WR18ASN use solder lug termination, ensuring compatibility with existing PCB layouts and wiring harnesses designed for this connection method.

Q: Is the panel cutout dimension identical? A: Yes. Both components require a rectangular panel cutout of 34.20mm x 17.20mm. No mechanical modification is necessary when substituting WR18ASN for WR18ASN/V.

Q: What is the operating temperature range for both parts? A: Both WR18ASN/V and WR18ASN operate across -25°C to 85°C, maintaining full electrical and mechanical performance within this range.