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Shanghai AOYI Electric Co., Ltd.

China Manufacturer with main products: Solid State Relay, Temperature Controller, Analog Panel Meter, Scr Voltage Regulator, Time Relay, Push Button, Digital Panel Meter

Home  >Products Catalog > solid state relay > SSR-40AA AC 24-380V Solid State Relay for PID Temperature Controller

SSR-40AA AC 24-380V Solid State Relay for PID Temperature Controller

FOB Price: 0.99 - 10.00 USD/Piece
Supply Ability: 10,000 Piece/Pieces per Month
Shipping: air,sea or express....
Payment Terms: L/C, T/T, Western Union, Other, payapl
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Export Markets: North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
Place of Origin: Zhejiang in China
Packaging Details: one pcs each box, 50 pcs each carton.

Quick Details

  • Contact Load: Low Power
  • Protect Feature: Epoxy
  • Size: Miniature
  • Usage: General Purpose
  • Theory: Solid State Relay
  • Model Number: SSR-40AA
  • Brand Name: AOYI
  • Load Voltage: 24-380V AC
  • Control Voltage: 80-250VAC
  • current: 10A, 25A, 40A, 60A, 75A, 90A,120A


SSR-40AA AC 24-380V Solid State Relay for PID Temperature Controller

Solid State Relays (SSR) What is a Solid State Relay?

An SSR, or solid state relay, is an electronic switch that contains no moving parts and that has the same use as an electromechanical relay.

In an SSR a small control signal controls a larger load current or voltage. Solid state relays consist of:


  • A sensor which responds to a control signal
  • A solid state electronic switching device
  • A coupling mechanism

The switching device is used in order to switch power to the load circuitry. The coupling mechanism enables the control signal to activate the switch without any moving parts.



SSR solid state relay 10A/25A/40A/60A/75A/90A/120A

Choosing the Right Solid State Relay:


When you are looking for the right solid state relays, you can filter the results by various attributes with the parametric search:

by Maximum Contact Current (1.1 mA to 500 A), Maximum Isolation Voltage (200 V, 1500 V, 2500 V, 3750 V, 4000 V, 5000 V,…)

and Output Voltage (up to 800 V) to name a few. The parametric filters on our website can help refine your search results depending on the required specifications.


Applications for Solid State Relays:

Solid state relays are ideal for repetitive applications due to the absence of moving parts. Some applications for solid state relays are:

  • Medical
  • HVAC
  • Professional food equipment
  • Theatrical lighting
  • Industrial machinery
  • Control panels
  • Elevators and lifts
  • I/O interfaces


Product Description

SSR-40AA AC 24-380V Solid State Relay for PID Temperature Controller


Technology Data:











 Control type                   AC-AC
 Current  10A, 25A, 40A,  60A, 75A, 90A,120A
 Operation Voltage  24-380VAC
 Control Voltage  80-250VAC
 Control Current  AC: 12mA
 Off-state Leakage Current  ≤4mA
 On-state Voltage Drop  ≤1.5VAC
 Dielectric strength  2000VAC
 Insulation Resietance  500MΩ/500VDC
 Ambient Temperature  -20°C~+70°C
 Installation  Bolts Fixed
 Input Status Indicator  LED
 Unit Weight  105g




1.Resistive load could not  exceed 60% of the rated current.

2.Inductive or capacitive load could not exceed 40% of the rated current.

3.Electric machine load could not exceed 20% of the rated current.

4.Proper radiator adapted to the working requirement of solid state relay should be equipped, the allowance should be widened when the load radiating condition is not so good. Short-circuit load is not allowable.

5.Over Current Protection: over current and short circuit are the main reasons for permanent damage of output controllable silicon in the SSR, and using fast fuse and air switch is one of methods for over current protection, fuse is also available for small capacity.

6.Over Voltage Protection: It can adopt parallel voltage-dependent resistance(MOV), the MOV area decides the absorption power, while its thickness decides the protective voltage value, generally, 471/10D voltage-dependent resistance for 220V series SSR, 681/10D voltage-dependent resistance for 380V series SSR, 821/10D voltage-dependent resistance for 480V series SSR. 


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