Description
The Schneider Electric SSP3A250B7 is a three-phase solid-state relay designed to switch high-current AC loads in industrial control systems. Rated for 50 A, it uses zero-voltage switching to ensure smooth operation of resistive loads while reducing electrical noise. This relay is commonly applied in heating systems, packaging equipment, and plastic processing machinery.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Schneider Electric |
| Category |
Industrial Control |
| Part Number |
SSP3A250B7 |
| Subcategory |
Solid State Relays |
| Product Type |
Solid State Relay (SSR) |
| Series |
Harmony SSP |
| Number of Phases |
3 |
| Contact Configuration |
3 Normally Open (NO) |
| Maximum Load Current |
50 A (with heat sink) |
| Output Voltage Range |
48–530 VAC |
| Control Input Voltage |
18–36 VAC |
| Input Current |
15–20 mA |
| Switching Mode |
Zero voltage switching |
| Response Time |
20 ms ON / 30 ms OFF |
| Ingress Protection |
IP20 |
| Mounting Type |
Panel / Chassis mount |
| Weight |
0.60 lb |
Information About SSP3A250B7
The SSP3A250B7 is part of Schneider Electric’s Harmony SSP series, which is engineered for durable and maintenance-free solid-state switching. It is constructed as a panel-mounted relay with finger-safe screw terminals to support secure installation in industrial enclosures. The relay is compatible with three-phase AC systems and is optimized for resistive load control where frequent switching is required. Integrated suppression components and zero-cross switching technology enhance reliability and protect connected equipment from transients.
Key Features:
- Three-Phase Solid-State Design: Supports three-phase AC load control in industrial power systems
- 50 A Load Capacity: Handles high-current resistive loads when properly heat-sinked
- Zero-Voltage Switching: Minimizes electrical stress and reduces electromagnetic interference
- Wide Output Voltage Range: Operates across 48–530 VAC output circuits
- AC Control Input: Accepts 18–36 VAC control signals for flexible integration
- Integrated Protection: Includes RC snubber and transient voltage suppression circuitry
- Status LED Indicator: Provides visual confirmation of control input presence
The SSP3A250B7 delivers the reliability and precision required for high-current industrial heating and process control applications.
