i-Autoc KSU600D40-L (243) is a 40A industrial solid state relay with integrated aluminium heatsink, designed for switching AC loads from a low-voltage DC control signal.

The relay features:

• 4-32V DC control input
• 40A rated current
• load rating up to 600V AC
• integrated heatsink
• DC controlled AC switching
• industrial panel installation.

The control terminals are marked 3+ and 4-, while terminals 1 and 2 are used for the AC load circuit.

The integrated heatsink makes the unit particularly suitable for electric heating applications where the SSR may switch frequently under PID temperature control.

Typical installation:

Temperature Sensor -> PID Controller -> KSU600D40-L SSR -> Electric Heater

Typical applications include:

• cartridge heaters;
• band heaters;
• ceramic heaters;
• tubular heaters;
• industrial ovens;
• injection molding machines;
• extrusion equipment;
• heated molds;
• thermal presses;
• drying equipment;
• industrial control cabinets.

For high continuous currents, correct cabinet ventilation, wiring, thermal management and electrical protection remain essential even though the heatsink is already integrated.

Main Technical Specifications

• Brand: i-Autoc
• Model: KSU600D40-L (243)
• Product type: Solid State Relay / SSR
• Configuration: single phase
• Control type: DC
• Load type: AC
• Control input: 4-32V DC
• Rated load current: 40A
• Load rating: up to 600V AC
• Control terminals: 3+ / 4-
• Load terminals: 1 / 2
• Integrated aluminium heatsink
• Designed for industrial electrical panels
• Suitable for electric heating control
• CE marked
• cRUus marking on product