M2018ES1A40 Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The M2018ES1A40 is an NKK Switches toggle switch with SPDT (Single Pole Double Throw) circuit configuration, rated for 6A at 125V AC and 3A at 30V DC. This component features a panel mount, right-angle vertical configuration with a flatted brass actuator and PC pin termination. The product is currently obsolete, making identification of functionally equivalent alternatives essential for system maintenance, repair, and redesign applications where continued availability is required.

Substiute Parts

M2018ES1A40

NKK SwitchesIn Stock: 728M2018ES1A40 Datasheet

Current PartRFQ

7105P3H3AV2GE

C&KIn Stock: 7417105P3H3AV2GE Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the M2018ES1A40 is determined by the following critical parameters:

Circuit and Function Compatibility: The substitute must maintain SPDT circuit configuration with Mom-Off-Mom switching function to preserve system logic and control behavior.

Electrical Ratings: The substitute must meet or exceed the AC voltage rating of 125V and AC current rating of 6A. DC ratings of 28V or higher and 5A or higher satisfy the original 30V/3A DC specification.

Mechanical Compatibility: Panel mount configuration with right-angle vertical orientation, 1/4-40 bushing thread, and PC pin termination are mandatory for direct installation without mechanical redesign.

Environmental and Compliance: Operating temperature range of -30°C to 85°C and ROHS3 compliance ensure functional equivalence in the intended application environment.

The C&K 7105P3H3AV2GE meets all substitution criteria within these parameters.

Parameter Comparison

Engineering Selection Recommendations

The C&K 7105P3H3AV2GE is an active product with ROHS3 compliance and REACH affected status, providing long-term availability compared to the obsolete M2018ES1A40. The substitute maintains identical circuit function, mounting configuration, and environmental operating range.

Electrical rating differences require application-level verification: the substitute's 5A AC rating is lower than the original 6A specification, while DC ratings are superior. Panel cutout diameter is 0.15mm smaller (6.35mm vs. 6.50mm), which may require minor panel hole adjustment depending on tolerance stack-up in the installation.

The substitute's extended electrical life of 40,000 cycles versus 25,000 cycles provides improved durability. Both components feature epoxy sealed terminals and identical bushing thread specifications, supporting direct mechanical replacement with minimal redesign.

Frequently Asked Questions (FAQ)

Q: Can the C&K 7105P3H3AV2GE directly replace the M2018ES1A40 without panel modification?

A: Mechanical installation is compatible. The 0.15mm difference in panel cutout diameter (6.35mm vs. 6.50mm) may require verification against actual panel hole tolerances. Electrical compatibility depends on application current draw not exceeding 5A AC.

Q: What is the significance of the lower AC voltage rating on the substitute?

A: The C&K part is rated 120V AC versus the original 125V AC. This 5V difference is acceptable for most industrial and consumer applications operating at standard line voltages. Verify the actual operating voltage in your system.

Q: Are there compliance differences between the two parts?

A: Both parts are ROHS3 compliant. The C&K substitute has REACH affected status, while the NKK original is REACH unaffected. Verify REACH compliance requirements for your end application and geographic market.

Q: Why is the substitute's electrical life rating higher?

A: The C&K 7105P3H3AV2GE is rated for 40,000 cycles versus 25,000 cycles for the NKK original. This indicates improved contact durability and longer operational life expectancy under identical switching conditions.

Q: What packaging format is available for the substitute?

A: The C&K 7105P3H3AV2GE is supplied in bulk packaging, with 688 pieces currently in stock as new original inventory.