Solid State Relays & SCR Power Modules
SSR-DA Series Single Phase Solid State Relay (SSR)
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 120A. Typical uses are heating equipment, ovens, lighting circuits, packaging machines and temperature control systems.
- Silent switching – no contact bounce, ideal for sensitive environments
- Fast response and long electrical life
- Compact design for easy panel integration
- Fully opto-isolated input/output for safe signal control
- Rated current options from 10A to 120A
- Zero-cross switching for stable control of resistive loads
- Suitable for industrial automation, temperature controllers and AC load switching
- Stock / sample dispatch
- 3–5 working days
- Warranty
- 12 months
- OEM
- Supported
- Shipping
- Worldwide export
Technical specifications
| Load Current | 10A, 25A, 40A, 50A, 60A, 75A, 80A, 100A, 120A |
|---|---|
| Load Voltage | 24–480VAC |
| Control Voltage | 3–32VDC |
| Control Current | DC 3–25mA |
| On-state Voltage Drop | ≤1.5V |
| Off-state Leakage Current | ≤2mA |
| On-off Time | ≤10ms |
| Dielectric Strength | 2500VAC |
| Insulation Resistance | 1000MΩ / 500VDC |
| Ambient Temperature | −30°C to +75°C |
| Mounting Method | Screw mounting |
| Work Indicator | LED |
| Weight | 90g for 10A and 25A; 135g for 40A and above |
SSR Selection Guide
Dimensions & Wiring Diagram
Related guides
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This blog explains the core differences between zero-crossing and random turn-on SSRs, including switching behavior, EMI, and application suitability.
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All Solid State Relays & SCR Power Modules
TSR Three Phase Solid State Relay — TSR-80DA, 10A–100A
TSR Three Phase Solid State Relay is a three-phase, DC-controlled AC solid state switching module for industrial heating and automation equipment. It accepts a 4–32VDC control signal, switches 24–380VAC loads, and is available from 10A to 100A (representative model TSR-80DA).
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SSR3 Three Phase Solid State Relay — 10A–200A
SSR3 Three Phase Solid State Relay is an industrial-grade three-phase, DC-controlled AC solid state switching module. It accepts a 3–32VDC control signal, switches 24–480VAC loads, and is available from 10A to 200A (representative model SSR3-25DA).
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BSSR-DA Solid State Relay
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 3-32VDC control input, 24-480VAC load output, fast switching, stable performance, compact design, and good heat dissipation.
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BSSR-40DA Single Phase SSR — DC to AC, 40A
BSSR-40DA is a single-phase DC-to-AC solid state relay rated at 40A, with 3–32VDC control input and 24–480VAC load output. It is used with PID temperature controllers on industrial heating, packaging, extrusion and automation equipment, offering fast zero-cross switching, silent operation and long service life. A matched heat sink is required at 40A continuous load.
View detailsNeed help selecting the right model?
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