myMectronic
myMectronic

A Premier B2B Part Search

NKK Switches S821 High Capacity Toggle Switch

The S821 is a double-pole single-throw toggle switch designed for industrial applications, featuring screw lug terminals and ON-NONE-OFF contacts. It has a chrome-plated brass bushing, brass contact terminals, and a phenolic resin case. The switch offers a maximum contact resistance of 10 milliohms, insulation resistance of at least 1000 megaohms at 500V DC, dielectric strength of 2000 VAC for 1 minute, and a mechanical lifespan of 50,000 operations. Its robust construction ensures reliable performance in demanding environments.

Authorized Distributors
Source:Newark
Part No:S821
Stock:590
Inv Date:06-17-2026
Price: Unit price: $44.67
Buy/RFQ:
Source:DigiKey
Part No:S821
Stock:1763
Inv Date:06-17-2026
Price: Unit price: $36.67
Buy/RFQ:
Part No:S821
Stock:163
Inv Date:06-18-2026
Price: Unit price: $36.67
Buy/RFQ:
Part No:S821
Stock:0
Inv Date:06-17-2026
Price: Unit price: $99
Buy/RFQ:
Part No:S821
Stock:916
Inv Date:06-17-2026
Price: Unit price: $44.67
Buy/RFQ:
Part No:S821
Stock:67
Inv Date:06-17-2026
Price: Unit price: $29.23
Buy/RFQ:

NKK Switches S821 High Capacity Toggle Switch Specifications:

  • Contact Resistance: 10 milliohms maximum
  • Insulation Resistance: 1000 megaohms minimum at 500V DC
  • Dielectric Strength: 2000 VAC minimum for 1 minute
  • Mechanical Life: 50,000 operations minimum
  • Contact Material: Brass with chrome plating
  • Case Material: Phenolic resin
  • Maximum Panel Thickness: 0.118 inches (3.0 mm)
  • Operating Temp Range: Not specified in data
  • Mounting: Panel mount with mounting screws
  • Standards & Certifications: Recognized by UL, CSA when ordered with marking

Buy the NKK Series S Toggle Switch: S821

Order the NKK Series S S821 double pole toggle switch online today to enjoy high durability, reliable switching performance, and easy installation. Perfect for industrial control applications with screw lug terminals, phenolic case, and brass contacts. With a lifespan of at least 50,000 operations and compliance with UL and CSA standards, this switch ensures safe and dependable operation. Easy to customize for panel mounting with standard hardware, making it an ideal choice for manufacturing and automation projects.

Buy NKK Series S S821 toggle switch now and experience unmatched reliability and performance in industrial control systems.

Frequently Asked Questions

Where can I buy NKK Switches S821?

You can click on the BUY or RFQ button to purchase S821 from an authorized NKK Switches distributor.

How do I troubleshoot issues or seek technical support for part S821?

You can download the S821 datasheet or visit the NKK Switches website for support.

Who is the manufacturer of S821?

NKK Switches

NKK Switches Part List

Browse and search other NKK Switches parts, locate datasheets and stock

Sponsored by