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

5 out of 5 based on 3 reviews | Write a review

$73.15

SSR-100AA single phase solid state relay 100 amp, AC to AC, control voltage 70-280V AC, load voltage 24-480V AC, zero cross switching type, panel mount, high reliability and favorable price.

SKU: ATO-SSR-DH100AA

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Overview
PDF Catalog
Relative Video

Features

100A solid state relay (SSR) with 70-280V AC input 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-DH100AA
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	100A
	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	135g
	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

Single Phase AC to AC SSR Wiring Diagram

Tips: What is a solid state relay?

A solid state relay is a non-contact switch composed of microelectronic circuits, discrete electronic devices, and electronic power devices. It is a non-contact switching device with the characteristics of relays, in which semiconductor devices are used to replace traditional electrical contacts as switching devices. Single-phase SSR is a four-terminal active device, two of which are input terminals and the others are output terminals. Optical isolation lies between them. Once the input terminal is given DC or pulse signals to a certain current value, the output terminal can be changed from off-state to on-state. It has the function of not only amplifying driving effect, but also isolation and is suitable for driving high-power switch-type actuators. Compared with the electromagnetic relay, it has higher reliability, no contact, long life, fast speed and small disturbance to the outside world and has been widely used.

ATO Solid State Relay Catalog.pdf

Solid state relay (SSR) is simple but widely used in the automation fields. Thus, it is not complex to wire a solid state relay. In this vedio, ATO takes a 40 Amp SSR (DC - AC) for example to show the wiring of a SSR and then switch on/off a motor with this SSR.

Existing reviews of Solid state relay SSR-100AA, 100A 70-280V AC to AC

State relay 100A very fast to be hot

On 10/1/23 order94548 I purchased SSR 60A relay. I use it with 10A load. It works great. It barely gets warm.
On 14/2/23 order 945923 I purchased SSR 100A relay. I use it with the same 10A load. It gets very fast very hot. This is unacceptable. I believe the relay is faulty. Please let me know how we can solve this problem. Thanks.

From: heard | Date: 06/04/2023

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ATO Responded

You need a heat sink, and the load must be equipped with a heat sink if it exceeds 5A.
Please refer to the link: https://www.ato.com/ssr-heat-sink

State relay is very fast to be hot

Thank you for the replay. I have heat sink. The two test were in the same environment with the same load 10A. The 60A becomes light warm. This is how it suppose to be.
The 100A becomes over 80℃ in a minute.
I have a lot of other cheap SSR and they behave like yours 100A.
Very fast to get hot. Measured with thermometer. Please I want to return the faulty one.

From: ajax | Date: 06/04/2023

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ATO Responded

Is your SSR coated with thermal grease? SSR must be coated with thermal grease.
Because solid state relays will have an on-state voltage drop, the SSR will become hot when it is running. How much the SSR heats up depends on the size of the load and the working time.
In addition to the heat sink, we recommend that you also add a fan for cooling.
For other precautions, please refer to the figure below.

For booster fan

I'm using this solid state relay for an HVAC booster fan. I used an AC circuit off my carrier furnace meant for an air purifier to trigger the relay. I will order more.

From: Enon | Date: 09/12/2022

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