The S309 is a non-illuminated, medium- to high-capacity, standard-sized panel-mount SPDT toggle switch. It features ON-OFF-(ON) switching functionality with solder lug terminals. The switch has a PBT flatted lever, a chrome-plated brass toggle and bushing, and a melamine phenol case with a zinc-plated steel cover. It is designed for industrial applications, offering a minimum mechanical life of 50,000 operations and an electrical life of at least 25,000 operations. The operating temperature range is from -10°C to 70°C.
NKK Switches S309 Standard Toggle Switch Specifications:
Contact Resistance: 10 milliohms maximum
Insulation Resistance: 1,000 megohms minimum @ 500V DC
Dielectric Strength: 2,000V AC minimum for 1 minute
Mechanical Life: 50,000 operations minimum
Electrical Life: 25,000 operations minimum
Operating Temperature Range: -10°C to +70°C
Mounting Torque: 2.94Nm (26 lbsin) for double nut
Maximum Panel Thickness: as per switch dimension drawings
Soldering Time & Temperature: Manual soldering, see Profile A in supplement section
Toggle Material: Brass with chrome plating
Bushing Material: Brass with chrome plating
Case Material: Melamine phenol
Case Cover Material: Steel with chromate over zinc plating
Movable Contactor: Copper with silver plating
Movable Contacts: Silver alloy capped on copper with silver plating
Stationary Contacts: Same as movable contacts
Terminals: Brass with tin plating
Buy the NKK S309 – Reliable Industrial Toggle Switch for Power Control
Order the NKK S309 toggle switch online today and experience reliable power switching for industrial applications. With a robust design featuring chrome-plated brass and a melamine phenol case, this switch provides superb durability. It supports up to 50,000 mechanical operations and 25,000 electrical cycles, with an operating temperature range from -10°C to 70°C. Perfect for automation, control panels, and machinery, it's easy to install and offers a long service life, making it an essential component for industrial needs.
Get NKK S309 today—built for precision and long-lasting durability in industrial environments.
Frequently Asked Questions
Where can I buy NKK Switches S309?
You can click on the BUY or RFQ button to purchase S309 from an authorized NKK Switches distributor.
How do I troubleshoot issues or seek technical support for part S309?
You can download the S309 datasheet or visit the NKK Switches website for support.
Who is the manufacturer of S309?
NKK Switches
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