Omron WLH12-LD Snap Action Switch - Equivalent & Substitute Parts

Part Overview

The Omron WLH12-LD is a snap action switch with SPDT (double-break/double-make) circuit configuration, rated for 10A at 125V AC and 6A at 30V DC. This component features a side rotary actuator with adjustable roller, chassis mount termination, and IP67 ingress protection suitable for industrial control applications. The WLH12-LD is classified as obsolete, necessitating identification of functionally equivalent alternatives for new designs and ongoing system maintenance.

Substiute Parts

WLH12-LD

Omron Automation and SafetyIn Stock: 1032WLH12-LD Datasheet

Current PartRFQ

WLCA12-LD-N

Omron Automation and SafetyIn Stock: 1105WLCA12-LD-N Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The WLCA12-LD-N qualifies as a direct substitute for the WLH12-LD based on the following critical parameters:

Electrical Equivalence: Both parts maintain identical SPDT circuit configuration, 10A AC current rating, 6A DC current rating, 125V AC voltage rating, and 30V DC voltage rating. These parameters define the electrical load capacity and switching capability required for the application.

Mechanical Compatibility: Both switches feature side rotary actuators with adjustable rollers, chassis mount installation, and screw terminal connections. These mechanical characteristics ensure physical and functional interchangeability in existing mounting configurations.

Environmental Specifications: Both parts provide IP67 ingress protection and operate across the identical temperature range of -10°C to 80°C, maintaining performance in equivalent environmental conditions.

Operational Life: Both switches deliver 750,000 electrical cycles and 15,000,000 mechanical cycles, ensuring comparable service life expectations.

Status Distinction: The WLH12-LD is obsolete, while the WLCA12-LD-N maintains active product status with RoHS compliance and REACH unaffected certification, making it the preferred selection for new applications.

Parameter Comparison

Engineering Selection Recommendations

The WLCA12-LD-N is the appropriate substitute for the obsolete WLH12-LD. Both components share identical electrical ratings, mechanical interfaces, and operational specifications that define functional equivalence for snap action switch applications.

The WLCA12-LD-N provides additional advantages through active product status, RoHS compliance certification, and REACH unaffected designation. These certifications ensure compliance with current regulatory requirements and supply chain continuity for new designs and production systems.

Minor variations in operating force (1360gf versus 1000gf), release force (120gf versus 100gf), and overtravel (70° versus 55°) reflect design refinements in the active product line. These mechanical parameter differences do not affect electrical switching performance or load capacity and remain within the functional envelope of the SPDT circuit configuration.

Frequently Asked Questions (FAQ)

Q: Can the WLCA12-LD-N directly replace the WLH12-LD in existing installations?

A: Yes. Both switches maintain identical electrical ratings (10A at 125V AC, 6A at 30V DC), SPDT circuit configuration, side rotary actuator design, chassis mount interface, and screw terminal connections. Physical and electrical interchangeability is confirmed across all critical parameters.

Q: What is the significance of the operating force difference between these parts?

A: The WLCA12-LD-N requires 1360gf operating force compared to 1000gf for the WLH12-LD. This represents a mechanical design refinement in the active product. The increased force does not affect electrical switching capability or load capacity and remains appropriate for side rotary actuator applications.

Q: Why is the WLH12-LD classified as obsolete?

A: The WLH12-LD is no longer in active production. The WLCA12-LD-N represents the current Omron product offering for this switch category, providing equivalent electrical and mechanical performance with improved regulatory compliance.

Q: Are there packaging differences between these parts?

A: The WLH12-LD is supplied with standard packaging, while the WLCA12-LD-N is available in bulk packaging. Both configurations contain identical components; packaging selection depends on procurement volume requirements.

Q: Does the WLCA12-LD-N meet current environmental and safety standards?

A: Yes. The WLCA12-LD-N carries RoHS compliance certification and REACH unaffected designation, confirming compliance with current environmental and chemical safety regulations. The WLH12-LD vendor compliance status is undefined.