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NKK Switches MB2521S4G01 snap-action pushbutton

The MB2521S4G01 is a snap-action pushbutton switch engineered for dependable on/off control in diverse electrical systems. Its quick actuation mechanism delivers smooth, precise switching, making it ideal for panel mounting applications. Crafted with durable materials such as brass, nickel plating, and stainless steel, it resists corrosion and mechanical stress. The switch features silver contacts rated at 3A @ 125V AC and gold over brass or copper contacts with 0.4VA maximum @ 28V AC/DC, ensuring reliable performance over extended operations. Suitable for industrial machinery, automation, and control panels, it combines robust construction with easy wiring and installation features.

Authorized Distributors
Source:DigiKey
Part No:MB2521S4G01
Stock:25
Inv Date:06-17-2026
Price: Unit price: $45.38
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Source:DigiKey
Part No:MB2521S4G01
Stock:38
Inv Date:06-17-2026
Price: Unit price: $6.24
Buy/RFQ:
Part No:MB2521S4G01
Stock:0
Inv Date:06-18-2026
Price: N/A
Buy/RFQ:
Part No:MB2521S4G01
Stock:0
Inv Date:06-17-2026
Price: Unit price: $11.35
Buy/RFQ:
Part No:MB2521S4G01
Stock:25
Inv Date:06-17-2026
Price: Unit price: $11.27
Buy/RFQ:

NKK Switches MB2521S4G01 snap-action pushbutton Specifications:

  • Electrical Capacity: 3A @ 125V AC, 0.4VA max @ 28V AC/DC
  • Contacts: Silver over silver, gold over brass or copper
  • Contact Resistance: 20 milliohms max for silver; 30 milliohms max for gold
  • Insulation Resistance: 1,000 megohms minimum @ 500V DC
  • Dielectric Strength: 1,000V AC minimum between contacts, 1,500V AC minimum contacts to case
  • Mechanical Life: 200,000 operations minimum
  • Electrical Life: 25,000 operations for silver contacts; 100,000 for gold contacts
  • Operating Temp Range: -30°C through +85°C
  • Vibration Resistance: 10-55Hz with 1.5mm amplitude, 2 hours per direction
  • Shock Resistance: 50G acceleration in all directions
  • Mounting: Panel mounting with adjustable hardware, maximum panel thickness 0.134 inches
  • Material: Brass with nickel plating, stainless steel frame
  • Terminal Type: Solder lug
  • Cap Material: Polycarbonate, various colors
  • Standards: UL94V-0, recognized and certified per UL and CSA standards when ordered accordingly
  • Dimensions: Cap diameter 8.0mm or 10.0mm, standard hardware included

Buy the NKK MB2521S4G01 – Reliable Pushbutton Switch for Industrial Applications

Discover the high-quality NKK MB2521S4G01 snap-action pushbutton switch, perfect for reliable switching in industrial automation and control panels. Featuring quick actuation, durable materials, and certified safety standards, this switch ensures long-lasting performance in demanding environments. Easy to install with solder lug terminals, it supports a variety of color-coded caps for clear operation indication. Enhance your electrical systems with this robust, reliable, and easy-to-maintain control component. Purchase online today to ensure seamless operation and superior control reliability.

Buy NKK MB2521S4G01 now and experience unmatched reliability and performance in your control systems.

Frequently Asked Questions

Where can I buy NKK Switches MB2521S4G01?

You can click on the BUY or RFQ button to purchase MB2521S4G01 from an authorized NKK Switches distributor.

How do I troubleshoot issues or seek technical support for part MB2521S4G01?

You can download the MB2521S4G01 datasheet or visit the NKK Switches website for support.

Who is the manufacturer of MB2521S4G01?

NKK Switches

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