SSR-LA Analog Controlled Solid State Relay, 4–20mA Input, 10A–100A

SSR-LA Series Analog Controlled Solid State Relay is a single-phase solid state voltage regulator module designed for proportional AC load control. It accepts a standard 4–20mA analog input signal and adjusts the AC output voltage accordingly, making it suitable for heating systems, temperature control equipment, fans, packaging machines and industrial automation applications.
The SSR-LA series is available in 10A, 25A, 40A, 60A, 80A and 100A current ratings, with an output voltage range of 0–2

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Key Features Technical Specifications Applications FAQ

4–20mA analog input control
Proportional AC voltage output
Single-phase solid state voltage regulation
Output voltage range: 0–250VAC
Available current ratings: 10A to 100A
Opto-isolated internal circuit design
High dielectric strength over 4KV
High isolation resistance over 100MΩ / 500VDC
High surge current and surge voltage resistance
Suitable for heating and automation control systems

Item	Specification
Product Series	SSR-LA Series
Product Type	Analog Controlled Solid State Relay
Control Signal	4–20mA
Output Type	Proportional AC Voltage Output
Output Voltage Range	0–250VAC
Rated Current	10A / 25A / 40A / 60A / 80A / 100A
Output Voltage Range Ratio	7%–95%
Peak Voltage	600VAC
On-State Voltage Drop	≤5.6V
Off-State Leakage Current	≤8mA rms
Dielectric Strength	4000Vrms
Isolation Resistance	≥100MΩ / 500VDC
Ambient Temperature	-20°C to +75°C
Mounting Method	Screw Mount
Certification	CE

Electric heating control
Temperature control systems
Industrial ovens
Packaging machinery
Drying equipment
Plastic machinery
Fan speed control
HVAC equipment
Automation control cabinets
Resistive load voltage regulation

Q1: What is the difference between SSR-LA and SSR-DA?
SSR-DA is mainly used for ON/OFF switching, while SSR-LA accepts a 4–20mA analog signal and provides proportional AC voltage output.

Q2: What input signal does SSR-LA support?
SSR-LA supports standard 4–20mA analog current input.

Q3: What output voltage does SSR-LA provide?
The SSR-LA series provides proportional AC output with a voltage range of 0–250VAC.

Q4: What current ratings are available?
Available models include 10A, 25A, 40A, 60A, 80A and 100A.

Q5: Does SSR-LA need a heatsink?
Yes. A suitable heatsink is recommended, especially when the load current is high or the module works continuously.

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Key Features

4–20mA analog input control
Proportional AC voltage output
Single-phase solid state voltage regulation
Output voltage range: 0–250VAC
Available current ratings: 10A to 100A
Opto-isolated internal circuit design
High dielectric strength over 4KV
High isolation resistance over 100MΩ / 500VDC
High surge current and surge voltage resistance
Suitable for heating and automation control systems

Technical Specifications

Item	Specification
Product Series	SSR-LA Series
Product Type	Analog Controlled Solid State Relay
Control Signal	4–20mA
Output Type	Proportional AC Voltage Output
Output Voltage Range	0–250VAC
Rated Current	10A / 25A / 40A / 60A / 80A / 100A
Output Voltage Range Ratio	7%–95%
Peak Voltage	600VAC
On-State Voltage Drop	≤5.6V
Off-State Leakage Current	≤8mA rms
Dielectric Strength	4000Vrms
Isolation Resistance	≥100MΩ / 500VDC
Ambient Temperature	-20°C to +75°C
Mounting Method	Screw Mount
Certification	CE

Applications

Electric heating control
Temperature control systems
Industrial ovens
Packaging machinery
Drying equipment
Plastic machinery
Fan speed control
HVAC equipment
Automation control cabinets
Resistive load voltage regulation

FAQ

Q1: What is the difference between SSR-LA and SSR-DA?
SSR-DA is mainly used for ON/OFF switching, while SSR-LA accepts a 4–20mA analog signal and provides proportional AC voltage output.

Q2: What input signal does SSR-LA support?
SSR-LA supports standard 4–20mA analog current input.

Q3: What output voltage does SSR-LA provide?
The SSR-LA series provides proportional AC output with a voltage range of 0–250VAC.

Q4: What current ratings are available?
Available models include 10A, 25A, 40A, 60A, 80A and 100A.

Q5: Does SSR-LA need a heatsink?
Yes. A suitable heatsink is recommended, especially when the load current is high or the module works continuously.