Samson 3375, Mounting And Operating Instructions, Page: 20 / 130

3-6 EB 8332-2 EN
Design and principle of operation
Type 3375 -10 -11 -20 -21 -22 -30 -31
Device safety
Degree of protection IP 65 according to EN 60529, suspended mounting not per -
mitted according to EN 60664
Class of protection I according to EN 61140
Device safety According to EN 61010-1
Noise immunity According to EN 61000-6-2 and EN 61326-1
Noise emission According to EN 61000-6-3 and EN 61326-1
Conformity
Additional electrical equipment
Limit contacts Mechanical Two adjustable limit contacts with changeover switches;
230 V AC/1 A · Without contact protection
Electronic Two adjustable limit contacts with relay and changeover
switches;
230 V AC/1 A · Without contact protection
RS-485 module Module for Modbus RTU communication
Materials
Housing Bottom section Spheroidal graphite iron
Middle section Cast aluminum alloy
Motor housing Cast aluminum alloy
Fan guard Plastic
Cover Glass-fiber-reinforced plastic
Actuator stem Stainless steel
Other information
Motor switch-off By torque-dependent limit switches
Permissible temperature
ranges 2)
Ambient 5 to 60 °C
Storage –20 to +70 °C
Humidity 5 to 95 % relative air humidity, no dew formation
1)
Manual override is not possible in actuators with fail-safe action upon fail-safe action.
2)
The permissible medium temperature depends on the valve on which the electric actuator is mounted. The limits in
the valve documentation apply.