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 100A. 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 100A
- Zero-cross switching for stable control of resistive loads
- Suitable for industrial automation, temperature controllers and AC load switching
- Lead time
- 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
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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.
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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.
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BSSR3 Three-Phase SSR — Standard, 40A–120A
The BSSR3 Three Phase Solid State Relay is designed for three-phase AC load control. It uses DC input control and AC output switching, suitable for industrial heating, temperature control, motor control, lighting systems, automation equipment, and power control cabinets. This series includes common current options such as 40A, 60A, 80A, and 100A, with output load voltage typically suitable for 48–480VAC three-phase systems.
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