Description

Schneider SSP1A125BD | solid state relay – panel mounting – input 3-32V DC, output 24-300 V AC, 25A

Technical Specifications

  • Model: SSP1A125BD
  • Type: Solid-State Relay (SSR)
  • Input Control Voltage: 3-32V DC
  • Output Load Voltage: 24-300V AC
  • Load Current Capacity: 25A
  • Switching Mode: Zero Voltage Switching (ZVS) (Reduces noise and inrush current)
  • Mounting Type: Panel mounting
  • Isolation Voltage: High isolation for safe and stable operation
  • Heat Dissipation: Requires a heat sink for optimal thermal management
  • Applications: Industrial automation, heating control, lighting, motor switching, and more

Key Features

1. High Load Switching Capacity (25A)

  • Supports a high continuous load current of 25A, making it ideal for power-intensive applications.
  • Suitable for controlling resistive, inductive, and capacitive loads efficiently.

2. Wide Input and Output Voltage Range

  • Works with low voltage DC inputs (3-32V DC), making it compatible with most PLC outputs, microcontrollers, and industrial control systems.
  • Can switch AC loads between 24V and 300V, providing flexibility across multiple industrial applications.

3. Zero Voltage Switching (ZVS) for Noise Reduction

  • ZVS ensures that switching occurs when the AC voltage crosses zero, reducing electromagnetic interference (EMI) and preventing power surges.
  • This feature increases the lifespan of connected loads, such as heating elements and industrial equipment.

4. Solid-State Durability – No Moving Parts

  • Unlike mechanical relays, SSR technology eliminates moving parts, making it resistant to shock, vibration, and wear.
  • Provides fast switching speeds for improved system response.

5. High Electrical Isolation for System Protection

  • Electrically isolates the input from the output, preventing voltage spikes or fluctuations from damaging the control system.
  • Ensures safe operation in industrial environments.

6. Panel Mounting with Heat Sink Requirement

  • Designed for easy panel mounting, making integration into control panels simple.
  • Requires a heat sink to dissipate excess heat, ensuring efficient thermal management and preventing overheating.

Applications

The Schneider SSP1A125BD solid-state relay is ideal for applications that require high-speed, reliable, and noise-free switching, such as:

Industrial Automation – Controls machinery, conveyor systems, and process equipment.
Heating Systems – Manages industrial ovens, heaters, and temperature control units.
Lighting Control – Suitable for LED and high-power lighting systems in commercial and industrial environments.
HVAC Systems – Controls fans, compressors, and heating elements efficiently.
Motor Switching – Capable of switching small to medium AC motors without wear and tear.
Food Processing and Medical Equipment – Ideal for applications requiring clean and silent operation.

Additional information

brands

Schneider Electric

Specifications

Main
Range of product Harmony Solid State Relays
Product or component type Panel mount relay
Device short name SSP1
Mounting support Panel
Number of phases 1 phase
[In] rated current 25 A
Solid state output type Zero voltage switching SCR output
Output switching mode Zero voltage switching
Complementary
test button Without test button
[Uc] control circuit voltage 3...32 V DC
Minimum switching voltage 3 V DC turn-on
Maximum switching voltage 1 V DC turn-off
Response time 0.5 cycle (turn-on) 0.5 cycle (turn-off)
Input current 10 mA at 12 V DC
Output voltage 24...300 V AC
Load current 0.15…25 A
Transient overvoltage 600 V
Surge current 250 A for 16.6 ms
Maximum I²t for fusing 259 A².s for 8.33 ms at 60 Hz 285 A².s for 10 ms at 50 Hz
Co-ordination type Type 1 - 25 A miniature circuit breaker (MCB) - curve B Type 2 - 20 A miniature circuit breaker (MCB) - curve B
Maximum leakage current 1 mA off-state
Maximum voltage drop <1.15 V on-state
DV/dt 500 V/µs off-state at maximum voltage
Power factor 0.5 (with maximum load)
Motor controller rating 0.5 hp 120 V AC 1 hp 240 V AC
Insulation resistance 1000 MOhm at 500 V DC
Maximum capacitance 10 pF for input/output
Dielectric strength 4 kV AC for input/output 4 kV AC for input or output to case
[Uimp] rated impulse withstand voltage 6 kV output to case 6 kV input to output
Tightening torque 1.5...1.7 N.m for input 2...2.2 N.m for output
Connections - terminals Screw terminals: 0.2...3.3 mm², (AWG 24...AWG 12) with cable end for input Screw terminals: 0.5...5.26 mm², (AWG 20...AWG 10) with cable end for output Screw terminals: 0.2...3.3 mm², (AWG 24...AWG 12) without cable end for input Screw terminals: 0.5...8.26 mm², (AWG 20...AWG 8) without cable end for output Forked type tag connectors: 9.2 x 4 mm for input Ring lugs: 9.2 x 4 mm for input Forked type tag connectors: 11.7 x 4.5 mm for output Ring lugs: 11.7 x 4.5 mm for output
Thermal resistance 0.8 °C/W junction to case
LED indicator LED, green for input
IP degree of protection IP20
Safety reliability data MTTFd = 1875.9 years B10d = 1731395
Product weight 89.2 g
Device presentation Complete product
Environment
Ambient air temperature for operation -40…80 °C
Ambient air temperature for storage -40…125 °C
pollution degree 2
overvoltage category III
Product certifications CSA UL CE EAC
Marking CSA CE EAC UL
Standards UL 508 CSA C22.2 No 14-13 IEC 62314 IEC 60950-1
Packing Units
Unit Type of Package 1 PCE
Number of Units in Package 1 1
Package 1 Height 3.800 cm
Package 1 Width 4.800 cm
Package 1 Length 6.500 cm
Package 1 Weight 96.000 g
Unit Type of Package 2 S01
Number of Units in Package 2 30
Package 2 Height 15.000 cm
Package 2 Width 15.000 cm
Package 2 Length 40.000 cm
Package 2 Weight 3.270 kg

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