Description

Features

25A 70-280V AC to AC solid state relay (SSR) features high structural strength, good impact resistance, and strong shock resistance. The SSR 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

Model	ATO-SSR-DH25AA
Input	Control voltage range	70-280V AC
Max. input current	15mA
Must operate voltage	70V AC
Must release voltage	50V AC
Output	Load voltage range	24-480V AC
Peak voltage	800V AC
Maximum load current	25A
Maximum off-state leakage current	2mA
Maximum off-state time	10mS
Maximum on-state voltage drop	1.5V
General	Type	AC to AC, single phase
Dimension L – W – H (mm)	57.4х44.8х28
Weight	100g
Dielectric strength (input to output)	4000V
Dielectric strength (input, output to the base)	2500V
Operating temperature	-20℃~ 80℃
Mount	Panel
Certification	CE

Note:

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;
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.
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.

Dimension (Unit: mm)

Wiring Diagram

Tips: Solid state relays’ advantages and disadvantages

Solid state relays work reliably and have a long life, no noise, no spark, no electromagnetic interference, fast switching speed, strong anti-interference ability, and small size, impact resistance, vibration resistance, anti-explosion, moisture proof, corrosion resistance, compatibility with logic circuits such as TTL, DTL, HTL. They can directly drive high-current load with tiny control signals.

The main disadvantage is the existence of on-state voltage drop (corresponding cooling measures needed), off-state leakage current, common use in AC and DC conditions, fewer contact sets, as well as poor indicators including overcurrent and overvoltage and voltage rise rate, current rise rate, etc.