Williams Controls WM-558

Designed for all Commercial Vehicle Applications.

The Williams Controls WM-558 is equipped with a Hall effect non-contact sensor that can be programmed for analog output and/or integrated switches. The electronics are IP68 and 69k sealed and highly EMI resistant (SAE J1113). In addition, the unit can be customized with contact or PWM output sensors.

The Electronic Floor Pedal WM-558 is available with a standard treadle angle of 35 or 45 degrees. The Throttle Control is made out of high strength engineered plastics. The base plate has five mounting holes for various mounting options.

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Operating Force (at 200mm from pivot point) Idle= 17N, Full Travel = 45N -
Static Load 1500N @ 150mm -
Vibration Random broadband up to 4g (3-axis, 3 hr. each axis,) -
Product Life Full travel cycles 3,000,000
Pedal Angle Degrees 35° or 45°


Electronics Seal Integrity Electronics IP68 and 69k sealed (IEC 60529)
EMI SAE J1113 compliant
Output Signal Dual APS, APS/IVS, APS/IVS/IVS, Dual PWM -


Operating Temperature Range −40°C to +85°C -
Storage Temperature Range −40°C to +105°C -
Humidity 95% RH for 120 hours 27°C to +75°C
Sand/Dust Tested to SAE J1455 -


Materials Base plate Diecast aluminum or composite plastic
Foot treadle Composite plastic

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