Product details

Compact three phase solid state relay

Features

① Optical isolation between control circuit and load circuit, compact three-phase solid state relay, with rail mounting, built-in heat sink.

② Thyristor output, zero current turn-off, voltage zero-crossing turn-on.

③ Compact size, economical, single in-line PCB soldering installation, standardized dimensions.

④ Control signal compatible with TTL logic.

⑤ Flame-retardant engineering plastic housing.

⑥ Wide range of applications: such as industrial electric furnaces, ovens, water pumps, motors, electrical switch cabinets, automation control equipment, commonly used in refrigerators, air conditioners, currency binding machines, mahjong machines, and other household appliances.

Compact Three-Phase Solid State Relay

The compact three-phase solid state relay, with rail mounting and built-in heat sink, is a contactless on-off electronic switch. It has two terminals for input control and two terminals for output control, with optical isolation in between, using optocoupling for input and output. When a DC or pulse signal is applied to the input terminal, the output terminal can switch from off to on (in the absence of a signal, it remains off), thus controlling a larger load. The entire device has no moving parts or contacts, achieving functions equivalent to common mechanical electromagnetic relays.

Since the solid state relay is a contactless switch element composed of solid components, it has advantages over electromagnetic relays such as reliable operation, fast switching speed, no noise, long life, compact size, no sparks, corrosion resistance, explosion-proof, and vibration resistance. It has minimal external interference, is compatible with logic circuits, has strong anti-interference capability, fast switching speed, and is easy to use, making it applicable in a wide range of fields.

It is gradually replacing traditional electromagnetic relays and can further expand into areas where traditional electromagnetic relays cannot be used, such as computers. It is now widely used in computer peripheral interface devices, electric furnace heating and temperature control equipment; CNC machinery, remote control systems, industrial automation devices; signal lights, traffic lights, stage lighting control equipment; instruments, medical equipment, copiers, color expansion machines, rubber and plastic machinery, automatic washing machines, refrigerators, air conditioners, currency binding machines, mahjong machines; and in chemical, coal mining, and other environments requiring explosion-proof, moisture-proof, and corrosion-resistant conditions. It has become an ideal replacement product in the relay family (EMR).

Three phase SSR

Product	Three phase solid state relay with heatsink and din rail mount
Model No.(DC to AC)	TSR1038DAS TSR1538DAS TSR2538DAS TSR3238DAS TSR4038DAS
Model No.(AC to AC)	TSR1038AAS TSR1538AAS TSR2538AAS TSR3238AAS TSR4038AAS
Control Method	3-32VDC/90-250VAC
Input Current	≥ 5mA
Operation Indicator	LED
On-Off Time	≤10ms
Reliable Turn-off Voltage	≤ 0.8VDC
Output Voltage	24-380VAC
Rated Operating Current	10A, 15A, 25A, 32A, 40A
On-State Voltage Drop	≤1.5V
Minimum On-State Current	50mA
Off-State Leakage Current	≤ 10mA
Dielectric Strength	2500VAC, 1 minute
Insulation Voltage	≥2500V
Insulation Resistance	≥100MΩ
Operating Temperature	-35 to 75 ℃
Power Frequency	50/60HZ
Load Current Safety Factor	2 times for resistive load, 3 times for inductive load
Weight	260g

Single phase SSR

Part Numbers	Control Method	Control Voltage	Rated Current	Control Current	Load Voltage	Heat Dissipation	Installation Method	On-Off Time	On-State Voltage Drop
SSR10DAS	DC to AC	3-32VDC	10A	≥10MA	24-380VAC	Built-in Heatsink	Din rail mount	≤10MS	≤1.5V
SSR15DAS	DC to AC	3-32VDC	15A	≥10MA	24-380VAC	Built-in Heatsink	Din rail mount	≤10MS	≤1.5V
SSR25DAS	DC to AC	3-32VDC	25A	≥10MA	24-380VAC	Built-in Heatsink	Din rail mount	≤10MS	≤1.5V
SSR40DAS	DC to AC	3-32VDC	40A	≥10MA	24-380VAC	Built-in Heatsink	Din rail mount	≤10MS	≤1.5V
SSR10AAS	AC to AC	90-250VAC	10A	≥10MA	24-380VAC	Built-in Heatsink	Din rail mount	≤10MS	≤1.5V
SSR15AAS	AC to AC	90-250VAC	15A	≥10MA	24-380VAC	Built-in Heatsink	Din rail mount	≤10MS	≤1.5V
SSR25AAS	AC to AC	90-250VAC	25A	≥10MA	24-380VAC	Built-in Heatsink	Din rail mount	≤10MS	≤1.5V
SSR40AAS	AC to AC	90-250VAC	40A	≥10MA	24-380VAC	Built-in Heatsink	Din rail mount	≤10MS	≤1.5V

Selection tips

Here are the considerations for selecting solid-state relay products:

When selecting a product, different current margins should be reserved based on the nature of the load. (For resistive loads, select 2-3 times the load current. For inductive or capacitive loads, select 3-5 times the load current.)
According to the relationship between load current and ambient temperature, if the ambient temperature is high or the heat dissipation conditions are poor, the current capacity should be increased. To prevent load short circuits during use, it is required to connect a fast circuit breaker or fast fuse corresponding to this product in series in the load circuit.
For inductive loads, a varistor should be connected in parallel at the output end to prevent damage to the thyristor due to overvoltage. Varistor (MOV) selection: choose 430-470V for the 240V range, 680-750V for the 440V range, and 1100-1200V for the 660V range.
During installation, the contact surface between the heat sink and this product must be flat and smooth, and a layer of thermal grease should be evenly applied to its surface. Finally, tighten and fix the screws with flat washers and spring washers symmetrically.
After the solid-state relay first stops working, the fixing screws should be tightened again while it is still warm to ensure that the base plate of the solid-state relay and the surface of the heat sink are in close contact, achieving optimal heat dissipation.
The rated current of different models of solid-state relays is the rated current at an ambient temperature of 40℃, so adequate heat dissipation is necessary!

FAQ

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