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NKK Switches S303 Industrial Toggle Switch

The S303 toggle switch offers medium/high capacity performance with a compact, standard size design. Suitable for resistive and inductive loads, it features silver-plated copper contacts, a phenolic resin case, and a chrome-plated brass toggle. Rated for 15A at 125V, with 50,000 mechanical and 15,000 electrical life cycles, it supports UL, C-UL, and CSA certifications. Its versatile configuration includes SPDT and DPDT options, with a panel thickness capacity of 4.7 mm, making it durable for industrial and automation applications.

Authorized Distributors
Source:DigiKey
Part No:S303
Stock:113
Inv Date:06-17-2026
Price: Unit price: $12.03
Buy/RFQ:
Part No:S303
Stock:4
Inv Date:06-18-2026
Price: Unit price: $11.55
Buy/RFQ:
Part No:S303
Stock:3
Inv Date:06-17-2026
Price: Unit price: $13.52
Buy/RFQ:
Part No:S303
Stock:0
Inv Date:06-17-2026
Price: Unit price: $8.66
Buy/RFQ:

NKK Switches S303 Industrial Toggle Switch Specifications:

  • Contact Resistance: 10 milliohms maximum
  • Insulation Resistance: 1,000 megohms minimum at 500V DC
  • Dielectric Strength: 2,000V AC for 1 minute
  • Mechanical Life: 50,000 operations minimum
  • Electrical Life: 15,000 operations minimum
  • Voltage Rating: 125V AC
  • Current Rating: 15A
  • Body Material: Phenolic resin
  • Toggle: Chrome-plated brass
  • Bushing: Brass with chrome plating
  • Terminals: Silver-plated copper
  • Operating Temp Range: -10°C to +70°C
  • Mounting Torque: 2.94 Nm (26 lbf-in)
  • Panel Thickness: 4.7 mm (0.185 inches)
  • Soldering: Manual, see Profile A
  • Certifications: UL, C-UL, CSA

Buy the Buy Nihon Kaiheiki Switches Part Number S303 Online

Get the Nihon Kaiheiki S303 toggle switch online today for high-capacity, reliable switching performance. Perfect for industrial automation, it features silver contacts, robust phenolic case, and UL, C-UL, CSA certification. Rated for 15A at 125V, this switch supports up to 50,000 mechanical operations and 15,000 electrical cycles, ensuring long-term service. Easy to install with a panel thickness capacity of 4.7 mm, it is ideal for various control applications needing durable, efficient switching solutions.

Order your Nihon Kaiheiki Series S303 toggle switch today and equip your project with reliable, industrial-grade performance and long-lasting durability.

Frequently Asked Questions

Where can I buy NKK Switches S303?

You can click on the BUY or RFQ button to purchase S303 from an authorized NKK Switches distributor.

How do I troubleshoot issues or seek technical support for part S303?

You can download the S303 datasheet or visit the NKK Switches website for support.

Who is the manufacturer of S303?

NKK Switches

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