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NKK Switches S21F medium capacity toggle switch

This medium capacity standard size toggle switch offers reliable performance for diverse industrial and electrical applications. Designed with robust materials and rated for resistive and inductive loads up to 20A at 125V, it features various configurations including single pole and double pole options, with optional splashproof and panel seal features. Suitable for panel mounting with specified torque and panel thickness, it meets UL, CSA, and recognition standards. Its construction includes zinc-plated steel, chrome-plated brass, phenolic resin, and silver-plated contacts, ensuring durability and stable operation across temperature ranges from 10°C to 70°C.

Authorized Distributors
Source:DigiKey
Part No:S2-1F
Stock:0
Inv Date:06-17-2026
Price: Unit price: $77.08
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Source:DigiKey
Part No:S21F
Stock:76
Inv Date:06-17-2026
Price: Unit price: $15.68
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Part No:S21F
Stock:143
Inv Date:06-18-2026
Price: Unit price: $14.15
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Part No:S2-1F
Stock:0
Inv Date:06-17-2026
Price: Unit price: $89.56
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Part No:S21F
Stock:0
Inv Date:06-17-2026
Price: Unit price: $16.4
Buy/RFQ:
Part No:S21F
Stock:757
Inv Date:06-17-2026
Price: Unit price: $15.18
Buy/RFQ:

NKK Switches S21F medium capacity toggle switch Specifications:

  • Material: Brass with chrome plating, Steel with zinc plating, Phenolic resin, Copper with silver plating, Silver alloy capped on copper with silver plating, Brass with tin plating
  • Contact Resistance: 10 milliohms maximum
  • Insulation Resistance: 1,000 megohms minimum @ 500V DC
  • Dielectric Voltage: 2,000V AC minimum for 1 minute
  • Mechanical Life: 30,000 operations minimum for some models, 50,000 for others
  • Soldering Temperature & Time: Refer to Profile A in Supplement section
  • Operating Temp Range: 10°C through +70°C (14°F through +158°F), Splashproof models meet IP67
  • Mounting Torque: 1.47Nm (13 in-lb) for single nut, 2.94Nm (26 in-lb) for double nut
  • Maximum Panel Thickness: 4.0mm (0.158 inch)
  • Standards & Certifications: UL Listed, CSA Certified, Recognized when ordered with marking
  • Electrical Capacity: Up to 20A at 125V, 250V, 30V, resistive and inductive loads
  • Configurations: SPST, SPDT, DPST, DPDT with solder lug, quick connect, and panel seal options
  • Operating Angle: Varies by model, typically around 20° to 28°

Buy the NKK Medium Capacity Toggle Switch – Reliable Industrial Toggle for Electrical Applications

Order NKK medium capacity toggle switch online today to ensure dependable operation for your electrical systems. This switch is engineered for durability, marked by high load capacity and robust construction. It features various configurations including SPST, SPDT, DPST, and DPDT with optional splashproof and panel seal features, fitting panels up to 4.0mm thick. Certification to UL and CSA standards guarantees safety and quality. Whether you need a solder lug or quick connect terminals, purchase online now and enhance your equipment with trusted quality and quick delivery.

Buy NKK medium capacity toggle switch now and experience unmatched reliability and performance for your industrial electrical projects.

Frequently Asked Questions

Where can I buy NKK Switches S21F?

You can click on the BUY or RFQ button to purchase S21F from an authorized NKK Switches distributor.

How do I troubleshoot issues or seek technical support for part S21F?

You can download the S21F datasheet or visit the NKK Switches website for support.

Who is the manufacturer of S21F?

NKK Switches

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