Step Controller Voltage 10V DC 1 Phase Contact Rating 5mA For Use With 4TDH6 4TDH7 4TDH8 4TDJ1 4TDJ2 4THD9 Voltage Range 0 to 10V DC Switch Type 1 to 8 Stage Fits kW 60 kW 80 kW 100 kW Amperage 5 mA Frequency 50 Hz 60 Hz Mounting Type Unit-Mounted Overall Height 3 3/4 in Overall Width 7 in Overall Depth 3/8 in Includes Fasteners Spacers Wire Leads with Terminals