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HS1B2NT025D024 Lovato SOLID STATE RELAY 1P 25A
Lovato HS1B2NT025D024 is a single-phase 25 A solid state relay with a 3–32 V DC control input, 12–280 V AC load voltage, SCR output and zero-crossing switching for industrial AC resistive loads.
£27.80
Why Choose the Lovato HS1B2NT025D024 Solid State Relay?
The Lovato HS1B2NT025D024 is a compact single-phase solid state relay (SSR) designed for reliable switching of AC resistive loads in industrial control and automation systems. Part of the Lovato HS1B solid state relay series, this hockey-puck-format device uses semiconductor switching technology to provide fast, silent operation without the mechanical contact wear associated with conventional electromechanical relays.
The HS1B2NT025D024 accepts a 3–32 V DC control signal and switches AC loads across a rated operating voltage range of 12–280 V AC. Its SCR semiconductor output uses zero-crossing switching, helping minimise electrical disturbances when switching compatible AC loads.
With a rated AC-51 operating current of 25 A at 40 °C and 20 A at 55 °C, the relay is well suited to heaters and other resistive-load switching applications. Screw terminals, high input-to-output isolation and integrated TVS output protection support dependable installation in industrial equipment and electrical control panels.
Key Advantages
- Compact single-phase 25 A solid state relay for industrial switching.
- Wide 3–32 V DC control voltage range for compatibility with PLC and electronic control outputs.
- 12–280 V AC rated load voltage.
- Zero-crossing switching helps reduce switching disturbances on compatible AC loads.
- Solid-state design provides silent operation with no mechanical switching contacts.
- High 4000 V input-to-output isolation.
- Integrated TVS output protection.
- Robust screw terminals provide secure industrial wiring connections.
Key Features
- Lovato HS1B solid state relay series.
- Single-phase hockey-puck design.
- 25 A AC-51 rated operating current at 40 °C.
- 20 A AC-51 rated operating current at 55 °C.
- 3–32 V DC control input.
- 12–280 V AC rated operating voltage.
- SCR semiconductor output.
- Zero-crossing switching mode.
- 45–65 Hz operational frequency range.
- Non-repetitive surge peak current of 340 A for 10 ms.
- 4000 V input/output isolation.
- Control and load connections via screw terminals.
Reliable Solid-State Switching for Industrial Loads
Unlike an electromechanical relay, the Lovato HS1B2NT025D024 switches loads electronically using an SCR semiconductor output. With no mechanical switching contacts to wear, the relay is particularly suitable for applications requiring frequent switching, quiet operation and long service life.
Its zero-crossing switching operates close to the AC waveform's zero-voltage point, helping reduce switching transients in suitable resistive-load applications. Correct thermal management is essential when operating solid state relays at higher currents, and the HS1B2NT025D024 should be installed with an appropriately rated heatsink where required by the application and ambient temperature.
Typical Applications
- Industrial electric heating systems.
- Resistive heater and heating-element control.
- Temperature control equipment.
- Packaging and processing machinery.
- Industrial ovens and heating equipment.
- PLC-controlled AC load switching.
- Machine automation and electrical control panels.
- Applications requiring frequent and silent switching.
Technical Specifications
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| Device Type | Solid State Relay | |
|---|---|---|
| Coil / Supply Voltage | 12 V DC, 24 V DC, 5 V DC | |
| HS Code | 85365003 | |
| Manufacturer | Lovato Electric | |
| Series | HS1B Solid State Relays | |
| Model | HS1B2NT025D024 | |
| Product type | Solid state relay | |
| Configuration | Single-phase | |
| Number of poles | 1 | |
| Housing format | Hockey puck | |
| Control voltage | 3–32 V DC | |
| Operating pick-up voltage | 3 V | |
| Operating drop-out voltage | 1 V | |
| Input current | 10–13 mA | |
| Static output type | SCR | |
| Switching mode | Zero crossing | |
| Rated operating voltage | 12–280 V AC | |
| Blocking voltage | 600 V | |
| Operational frequency | 45–65 Hz | |
| Rated operating current AC-51 at 40 °C | 25 A | |
| Rated operating current AC-51 at 55 °C | 20 A | |
| Minimum operational current | 0.05 A | |
| Non-repetitive surge peak current | 340 A at 10 ms | |
| Off-state leakage current | 1 mA | |
| On-state voltage drop | 1.25 V | |
| Thermal resistance, junction to case | 1.6 K/W | |
| Required heatsink thermal resistance at rated AC-51 current | ≤2.2 K/W | |
| Input-to-output isolation | 4000 V | |
| Input/output-to-metal-base isolation | 4000 V | |
| Output protection | TVS | |
| I²t | 600 A²s | |
| Control terminals | M4 screw | |
| Load terminals | M5 screw | |
| Fixing | Screw mounting | |
| Operating position | Any | |
| Operating temperature | −40 to +90 °C | |
| Storage temperature | −40 to +100 °C | |
| Weight | 90 g | |
| Conformity | IEC/EN/BS 60947-4-3, IEC/EN/BS 60947-4-2, IEC/EN/BS 62314, IEC/EN/BS 60335-1 | |
| Certifications | cURus, VDE, CSA | |
| EAN | 8013975321546 |
Frequently Asked Questions
What is the Lovato HS1B2NT025D024 used for?
The HS1B2NT025D024 is a single-phase solid state relay designed for electronic switching of AC loads, particularly AC-51 resistive loads such as industrial heating elements.
What is the rated current of the HS1B2NT025D024?
The relay is rated at 25 A AC-51 at 40 °C and 20 A AC-51 at 55 °C, subject to correct thermal management and installation.
What control voltage does the HS1B2NT025D024 require?
The relay accepts a 3–32 V DC control input, making it suitable for use with compatible PLC and electronic control outputs.
What load voltage can the HS1B2NT025D024 switch?
The HS1B2NT025D024 has a rated operating voltage range of 12–280 V AC and an operational frequency range of 45–65 Hz.
Does the HS1B2NT025D024 use zero-crossing switching?
Yes. Its SCR output uses zero-crossing switching, which is particularly suitable for controlled switching of compatible AC resistive loads.
Trusted by Industrial Automation Professionals
Lovato HS series solid state relays provide machine builders, panel manufacturers and automation engineers with compact semiconductor switching solutions for reliable, frequent and silent control of industrial electrical loads.
