NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com

02-08

Environmentally Sealed Toggles

Series WT

General Specifications

Electrical Capacity (Resistive Load)

Power Level:

10A @ 125V AC or 6A @ 250V AC or 10A @ 30V DC

Other Ratings

Contact Resistance:

10 milliohms maximum for solder lug & screw terminal models;

30 milliohms maximum for wire lead terminal models

Insulation Resistance:

200 megohms minimum @ 500V DC

Dielectric Strength:

1,500V AC minimum for 1 minute minimum

Mechanical Life:

50,000 operations minimum for On-None-Off, On-None-On, & On-Off-On models

30,000 operations minimum for all other models

Electrical Life:

15,000 operations minimum

Angle of Throw:

24°

Materials & Finishes

Toggle:

Brass with chrome plating

Bushing & Outer Case:

Fiberglass reinforced polyamide (UL94V-0)

Inner Case:

Melamine

Inner Sealing Ring:

Nitrile butadiene rubber for On-None-Off, On-None-On, & On-Off-On models;

silicone rubber for all other models

Outer Sealing Ring:

Natural rubber

Movable Contactor:

Copper with silver plating

Movable Contacts:

Silver alloy plus copper with silver plating

Stationary Contacts:

Silver alloy plus copper with silver plating

Terminals:

Copper with tin plating for solder lug & wire lead; brass with silver plating for screw lug

Wire Lead Covers:

Heat resistant polyvinyl chloride (Leads are AWG 16)

Environmental Data

Operating Temp Range:

–30°C through +70°C (–22°F through +158°F)

Humidity:

90 ~ 95% humidity for 96 hours @ 40°C (104°F)

Vibration:

10 ~ 55Hz with peak-to-peak amplitude of 1.5mm traversing the frequency range

& returning in 1 minute; 3 right angled directions for 2 hours

Shock:

Front Panel Seal:

IP67 of IEC60529, dust tight & water protected during temporary immersion for all models;

optional toggle boot AT401 for additional protection (details at end of WT section)

Behind Panel Seal:

IP60 of IEC60529, dust tight but not water protected

for solder lug & screw terminal models

IP67 of IEC60529, dust tight & water protected during temporary immersion

for wire lead models

Installation

Soldering Time & Temp:

Manual Soldering: See Profile A in Supplement section.

Mounting Torque:

Standards & Certifications

Flammability Standards:

UL94V-0 outer case

Wiring Material Standards:

UL AWM 1015 Recognized at Flammability VW-1;

Temperature Range –20°C ~ +105°C; Maximum Load 600V; AWG 16.

CSA TEW 105 Certified at Temperature Range –20°C ~ +105°C;

Maximum Load 600V