WR18AS/UCV Equivalent & Substitute Parts

Part Overview

The NKK Switches WR18AS/UCV is a rocker switch with SPDT (Single Pole Double Throw) circuit configuration, rated for 15A at 125V AC and 30V DC. This panel-mount, snap-in switch features a concave black actuator with solder lug termination and IP67 ingress protection. The WR18AS/UCV is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and new design implementations where this switch type is required.

Substiute Parts

WR18AS/UCV

NKK SwitchesIn Stock: 1130WR18AS/UCV Datasheet

Current PartRFQ

WR18AS/CUL

NKK SwitchesIn Stock: 932WR18AS/CUL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the WR18AS/UCV is determined by strict equivalence across electrical and mechanical parameters. The following criteria establish direct substitutability:

Electrical Parameters: Circuit configuration (SPDT), switch function (Mom-Off-Mom), current rating (15A AC/DC), voltage ratings (125V AC / 30V DC), and approval certifications (EN, UL) must remain identical.

Mechanical Parameters: Mounting type (Panel Mount, Snap-In), actuator type (Concave), actuator color (Black), termination style (Solder Lug), and panel cutout dimensions (34.20mm x 17.20mm) must match exactly.

Environmental Parameters: Ingress protection rating (IP67), operating temperature range (-25°C to 85°C), mechanical life (30,000 cycles), and electrical life (10,000 cycles) must be maintained.

The WR18AS/CUL meets all substitution criteria and represents a direct equivalent with active product status.

Parameter Comparison

Engineering Selection Recommendations

The WR18AS/CUL is a direct functional equivalent to the WR18AS/UCV. Both parts share identical electrical ratings, mechanical specifications, and environmental performance characteristics. The primary distinction is product status: the WR18AS/UCV is obsolete, while the WR18AS/CUL maintains active status with current manufacturing support.

The WR18AS/CUL additionally carries ROHS3 compliance certification, meeting current regulatory requirements for electronic component manufacturing. Both parts maintain EN and UL approvals, ensuring compliance with international safety standards.

For applications currently using the WR18AS/UCV, direct substitution with the WR18AS/CUL is supported without circuit modification or performance degradation.

Frequently Asked Questions (FAQ)

Q: Can the WR18AS/CUL replace the WR18AS/UCV in existing applications?

A: Yes. The WR18AS/CUL is electrically and mechanically equivalent. All electrical ratings (15A at 125V AC / 30V DC), circuit configuration (SPDT Mom-Off-Mom), mounting specifications (Panel Mount, Snap-In), and environmental performance parameters are identical. Panel cutout dimensions match exactly at 34.20mm x 17.20mm.

Q: What is the difference between these two part numbers?

A: The WR18AS/UCV is classified as obsolete, while the WR18AS/CUL is active. The WR18AS/CUL includes ROHS3 compliance certification. All functional and mechanical parameters remain identical.

Q: Are there any compatibility concerns with solder lug termination?

A: No. Both parts use identical solder lug termination. PCB layout and connection methodology remain unchanged.

Q: Do these switches require different panel cutout dimensions?

A: No. Both switches require the same rectangular panel cutout of 34.20mm x 17.20mm. Snap-in mounting is identical.

Q: What is the operating temperature range for these switches?

A: Both the WR18AS/UCV and WR18AS/CUL operate across -25°C to 85°C. Mechanical life is rated at 30,000 cycles and electrical life at 10,000 cycles under these conditions.