Solid State Relays & SCR Power Modules
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.
- 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
- Lead time
- 3–5 working days
- Warranty
- 12 months
- OEM
- Supported
- Shipping
- Worldwide export
Technical specifications
| 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 |
Related guides
SSR-25DA Solid State Relay: Electrical Data, Sizing, Heat Sink and Wiring
Electrical data, current sizing rules, heat sink and derating guidance, wiring practice and a fault-finding table for the SSR-25DA DC-controlled solid state relay used on industrial heating loads.
Read guide Technical Guides · 2026-08-23How to Wire TCN4S and TCN4H/L/M Temperature Controllers: Contactor and SSR Methods
Terminal-by-terminal wiring instructions for the TCN4S-14RV and TCN4H/L/M-14RV PID temperature controllers, covering AC contactor (relay output) wiring, BSSR-25DA solid-state relay wiring, K type and PT100/Cu50 sensor connections, SSR heat sink sizing and a commissioning checklist.
Read guide FAQ · 2025-05-22What's the Difference Between Zero-Crossing and Random Turn-On Solid State Relays?
This blog explains the core differences between zero-crossing and random turn-on SSRs, including switching behavior, EMI, and application suitability.
Read guideRelated models
All Solid State Relays & SCR Power Modules
SSR-DA Single-Phase SSR — Standard Black Housing, 10A–100A
SSR-DA Series single-phase solid state relays from Beijing Strong Electric offer fast, silent zero-cross switching for AC resistive loads. Control input is 3–32VDC, load output 24–480VAC, with rated current from 10A to 100A. Typical uses are heating equipment, ovens, lighting circuits, packaging machines and temperature control systems.
View details
BSSR-3 Three-Phase SSR — Integrated Cover, 10A–120A
BSSR-3 Series Three-Phase Solid State Relay is an industrial-grade solid state switching module designed for three-phase AC load control. It supports DC-to-AC control and AC-to-AC control options, with rated current choices from 10A to 120A.
View details
BSSR-DA Single-Phase SSR — Integrated Cover, 10A–120A
BSSR-DA Series Solid State Relay is a single-phase DC-to-AC solid state relay designed for industrial heating, motor control, temperature control systems, automation equipment, and switching applications. It features DC 3-32V control input, AC 24-480V load output, fast switching, stable performance, compact design, and good heat dissipation.
View details
DIN Rail SSR with Integrated Heat Sink, 10A–120A
DIN Rail Mount Solid State Relay is a slim integrated SSR with built-in heat sink, designed for compact industrial control cabinets and DIN rail installation. It supports high-efficiency switching for AC load control, with current options from 10A to 120A. The integrated heat sink improves thermal management, while the slim structure helps save panel space.
View detailsNeed help selecting the right model?
Send us the load, voltage, sensor type and output signal. We reply with the matching model, wiring notes and an OEM quotation.