Solid state relay, 3 phase, SSR-100AA, 100A 70-280V AC to AC

Features

100A 3-phase solid state relay (SSR) can control 24-480V AC load with 70-280V AC with high structural strength, good impact resistance, and strong shock resistance. The SSR relay offers a reliable switching the commercial and industrial loads, such as computer peripheral interface device, printing machine, molding machine, food machine, packaging machine, and so on.

• Built in RC absorption
• Photoelectric isolation
• SCR output
• LED indicator for operation status
• Removable protective cover for safety
• Panel mount
• Zero-crossing switch type

Specification

Note:

1. When the load is a resistive load, the maximum load current of the selected SSR should be 2~3 times greater than the actual load current;
   
2. When the load is an inductive load, the maximum load current of the selected SSR should be more than 7~8 times the actual load current.
   
3. When the maximum load current is higher than 10A, a heat sink must be installed to the solid state relay, or the SSR relay should be mounted on a metal base plate with heat dissipation effect, and the thermal grease is applied between them.

Heat Sink

Product Name	Heat sink for 3 phase SSR
Material	Aluminum alloy
Dimension (L*W*H)	150*125*135mm
Mounting Size	Mounting Hole Diameter: 3mm Groove Distance: 84mm
Weight	2.1kg
Application	≤150A 3 phase solid state relay

Dimensions (Unit: mm)

Wiring Diagram

Tips: SSR relay-ordinary type of Triac output and enhanced type of unidirectional SCR anti-parallel output

In the case of inductive load, when the solid state relay is turned off by the on-state, a large voltage rise rate dv/dt (commutation dv/dt) will be generated at both ends of the triac due to inconsistent phase of current and voltage. The value exceeding the triac's commutation dv/dt (typically 10V/μs) will lead to delayed turn-off, or even failure. However, the unidirectional triac is unipolar and only affected by satic voltage rising rate dv/dt (typical value 100V/μs). The commutation dv/dt of ordinary type SSR formed by only triac has been greatly improved compared to enhanced SSR composed of two unidirectional SCR in anti-parallel, so the enhanced SSR should be selected in inductive or capacitive load field.