NKK Switches E2018 Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The NKK Switches E2018 is a panel-mounted toggle switch with SPDT (Single Pole Double Throw) circuit configuration and momentary-off-momentary (Mom-Off-Mom) switching function. Rated for 3A at 125V AC, this switch features a standard round actuator with solder lug termination and a circular 6.50mm panel cutout. The E2018 is classified as obsolete, making identification of functionally equivalent substitute components essential for ongoing system maintenance and new design implementations where this legacy component is specified.

Substiute Parts

E2018

NKK SwitchesIn Stock: 739E2018 Datasheet

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100SP4T1B1M1QEH

E-SwitchIn Stock: 1360100SP4T1B1M1QEH Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the E2018 is determined by strict alignment of the following critical parameters:

Circuit and Function Requirements:

• SPDT circuit configuration (single pole, double throw)
• Mom-Off-Mom switching function
• Solder lug termination style

Electrical Specifications:

• Current rating of 3A minimum (AC rated)
• Voltage rating of 125V AC minimum
• Operating temperature range compatibility

Mechanical and Installation Requirements:

• Panel mount configuration
• Standard round actuator type
• Actuator length within acceptable tolerance (10.50mm nominal)
• Circular panel cutout compatible with M6 x 0.75 bushing thread or equivalent mechanical interface

The E-Switch 100SP4T1B1M1QEH meets these substitution criteria through equivalent circuit topology, enhanced electrical ratings, compatible mechanical form factor, and active product status with modern compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The E-Switch 100SP4T1B1M1QEH is a direct functional substitute for the obsolete NKK E2018. Both components share identical circuit topology (SPDT), switching function (Mom-Off-Mom), termination method (solder lug), and mechanical mounting configuration (panel mount with standard round actuator).

The E-Switch substitute provides enhanced specifications across multiple parameters: current rating increased from 3A to 5A AC/DC, expanded operating temperature range (-30°C to 85°C versus -10°C to 70°C), doubled electrical life (40,000 cycles versus 20,000 cycles), and modern RoHS3 compliance status. The substitute maintains mechanical compatibility with panel cutout dimensions within acceptable tolerance (6.35mm versus 6.50mm circular opening).

For applications requiring RoHS compliance or extended operational specifications, the E-Switch 100SP4T1B1M1QEH is the appropriate selection. For legacy system maintenance where original specifications must be preserved exactly, mechanical and electrical compatibility has been verified within the provided parameter set.

Frequently Asked Questions (FAQ)

Q: Can the E-Switch 100SP4T1B1M1QEH directly replace the NKK E2018 in existing designs?

A: Yes. Both components share SPDT circuit configuration, Mom-Off-Mom function, solder lug termination, and panel mount mechanical interface. The E-Switch substitute meets or exceeds all electrical and mechanical requirements of the original part.

Q: What are the key differences between these two switches?

A: The primary differences are product status (E2018 is obsolete; 100SP4T1B1M1QEH is active), current rating (3A versus 5A), operating temperature range (-10°C to 70°C versus -30°C to 85°C), electrical life (20,000 versus 40,000 cycles), and RoHS compliance status (non-compliant versus ROHS3 compliant).

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

A: Panel cutout dimensions differ slightly (6.50mm for E2018 versus 6.35mm for 100SP4T1B1M1QEH). Both are circular openings with compatible bushing thread specifications. Existing panel cutouts for the E2018 will accommodate the substitute component.

Q: Does the E-Switch substitute support DC voltage applications?

A: Yes. The 100SP4T1B1M1QEH is rated for 28V DC, providing additional application flexibility beyond the AC-only specification of the original E2018.

Q: What is the significance of the RoHS compliance difference?

A: The E2018 is RoHS non-compliant, while the 100SP4T1B1M1QEH is ROHS3 compliant. For new designs or systems subject to RoHS regulatory requirements, the E-Switch substitute is the appropriate selection.