WR18AL/UCV Rocker Switch - Equivalent & Substitute Parts

Part Overview

The WR18AL/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 and IP67 ingress protection. The product is currently obsolete, making identification of compatible substitute parts essential for system maintenance, repair, and component sourcing.

Substiute Parts

WR18AL/UCV

NKK SwitchesIn Stock: 728WR18AL/UCV Datasheet

Current PartRFQ

WR18AL/CUL

NKK SwitchesIn Stock: 728WR18AL/CUL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the WR18AL/UCV is determined by strict equivalence across the following critical parameters:

Electrical Compatibility:

• Circuit configuration (SPDT)
• Switch function (Mom-Off-Mom)
• Current rating (15A AC/DC)
• Voltage ratings (125V AC, 30V DC)
• Electrical life (10,000 cycles minimum)

Mechanical Compatibility:

• Mounting type (Panel Mount, Snap-In)
• Panel cutout dimensions (Rectangular - 34.20mm x 17.20mm)
• Actuator type (Concave/Curved)
• Actuator color (Black)
• Termination style (Wire Leads)
• Mechanical life (30,000 cycles minimum)

Environmental & Regulatory:

• Ingress protection (IP67)
• Operating temperature range (-25°C to 85°C)
• Approval agencies (EN, UL)

The WR18AL/CUL substitute part maintains identical electrical and mechanical specifications while differing in product status (Active vs. Obsolete) and packaging configuration (Bulk vs. standard packaging).

Parameter Comparison

Engineering Selection Recommendations

The WR18AL/CUL is a direct functional equivalent to the WR18AL/UCV. Both parts share identical electrical ratings, mechanical specifications, and regulatory certifications (EN, UL). The primary distinction is product status: WR18AL/UCV is obsolete, while WR18AL/CUL is active and currently in production.

For new designs or system replacements, WR18AL/CUL is the appropriate selection due to its active product status and availability. The WR18AL/CUL additionally carries ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, meeting modern environmental and regulatory requirements.

Both parts are suitable for applications requiring SPDT momentary switching at 15A/125V AC with IP67 environmental protection and panel-mount installation.

Frequently Asked Questions (FAQ)

Q: Can WR18AL/CUL directly replace WR18AL/UCV in existing installations?

A: Yes. Both parts are electrically and mechanically identical. They share the same SPDT circuit configuration, 15A/125V AC rating, Mom-Off-Mom function, panel cutout dimensions (34.20mm x 17.20mm), and IP67 ingress protection. No circuit modifications or mechanical adjustments are required.

Q: What is the difference between WR18AL/UCV and WR18AL/CUL?

A: The primary differences are product status (Obsolete vs. Active), packaging format (Standard vs. Bulk), and regulatory compliance documentation. WR18AL/CUL includes ROHS3 compliance certification and MSL Level 1 rating. Functionally and electrically, both parts are equivalent.

Q: Are there any compatibility concerns with panel cutout dimensions?

A: No. Both parts require an identical rectangular panel cutout of 34.20mm x 17.20mm and use the same snap-in mounting mechanism. Existing panel installations designed for WR18AL/UCV will accommodate WR18AL/CUL without modification.

Q: What is the significance of the Mom-Off-Mom switch function?

A: Mom-Off-Mom indicates momentary operation in both directions with a center-off position. The switch returns to the neutral (off) position when released. This function is identical between both parts.

Q: Does the WR18AL/CUL meet current environmental standards?

A: Yes. WR18AL/CUL carries ROHS3 compliance and REACH Unaffected status, meeting current environmental and regulatory requirements for electronic components in most jurisdictions.