WR18AT/UCV Equivalent & Substitute Parts

Part Overview

The WR18AT/UCV 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 screw terminal connections and IP67 ingress protection.

The WR18AT/UCV is currently listed as obsolete. Identifying equivalent substitute parts is necessary to maintain system functionality and ensure continued availability for applications requiring this switch specification.

Substiute Parts

WR18AT/UCV

NKK SwitchesIn Stock: 928WR18AT/UCV Datasheet

Current PartRFQ

WR18AT/CUL

NKK SwitchesIn Stock: 1067WR18AT/CUL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the WR18AT/UCV is determined by strict equivalence across electrical and mechanical parameters. The substitute part must maintain identical specifications in the following critical areas:

• Circuit configuration (SPDT)
• Switch function (Mom-Off-Mom)
• Current and voltage ratings (15A AC/DC, 125V AC, 30V DC)
• Mounting type and panel cutout dimensions (Panel Mount, Snap-In; 34.20mm x 17.20mm)
• Actuator type and color (Concave, Black)
• Termination style (Screw Terminal)
• Ingress protection rating (IP67)
• Operating temperature range (-25°C to 85°C)
• Mechanical and electrical life cycles (30,000 and 10,000 respectively)
• Regulatory approvals (EN, UL)

The WR18AT/CUL meets all these criteria and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The WR18AT/CUL is the direct substitute for the obsolete WR18AT/UCV. Both parts share identical electrical ratings, mechanical specifications, and regulatory certifications. The WR18AT/CUL maintains active product status and includes ROHS3 compliance and REACH unaffected designation, providing regulatory advantages for new designs and ongoing procurement.

Selection of WR18AT/CUL ensures functional equivalence while supporting current compliance requirements and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can WR18AT/CUL be used as a direct replacement for WR18AT/UCV?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters, including circuit configuration, current and voltage ratings, mounting dimensions, and regulatory approvals.

Q: What is the difference between WR18AT/UCV and WR18AT/CUL?

A: The primary difference is product status. WR18AT/UCV is obsolete, while WR18AT/CUL is active. WR18AT/CUL additionally carries ROHS3 compliance and REACH unaffected designation. All functional and electrical specifications remain identical.

Q: Are the panel cutout dimensions identical?

A: Yes. Both parts require a rectangular panel cutout of 34.20mm x 17.20mm and use identical snap-in mounting.

Q: Do both parts have the same termination style?

A: Yes. Both parts use screw terminal connections.

Q: What regulatory approvals apply to both parts?

A: Both WR18AT/UCV and WR18AT/CUL carry EN and UL approvals.