Lovato HS1B6NT090E230 is a single-phase 90 A hockey-puck solid state relay with a 24–600 V AC load range, 18–280 V AC/DC control input, SCR output and zero-cross switching for resistive loads.
£87.72
The Lovato HS1B6NT090E230 is a high-current single-phase 90 A solid state relay from the HS1B series, designed for electronic switching of resistive AC loads. Its compact hockey-puck format, SCR semiconductor output and screw terminals make it well suited to industrial heating and automation applications requiring frequent, silent switching without mechanical contact wear.
The HS1B6NT090E230 operates across a wide 24–600 V AC load-voltage range and accepts an equally flexible 18–280 V AC/DC control input. This broad control-voltage capability simplifies integration into industrial control circuits operating at a variety of AC or DC control voltages.
With zero-cross switching, the relay switches its output close to the zero-voltage point of the AC waveform to help reduce switching disturbances. It provides a rated AC-51 resistive-load current of 90 A at 40 °C, together with 4000 V input-to-output isolation, TVS output protection and a high 1200 A non-repetitive surge-current capability at 10 ms.
The HS1B6NT090E230 uses an SCR semiconductor output rather than mechanically operated contacts, enabling frequent and silent switching without the contact wear associated with conventional electromechanical relays. This makes it particularly suitable for high-cycle resistive-load applications such as industrial heaters, heating elements and temperature-controlled process equipment.
Zero-cross operation switches the load near the AC waveform's zero-voltage point, while integrated TVS protection helps protect the output stage against transient overvoltages. Correct thermal management remains essential at high load currents; Lovato specifies a heatsink with thermal resistance of ≤0.3 K/W when operating at the stated rated AC-51 current conditions.
| Manufacturer | Lovato Electric |
|---|---|
| Series | HS1B |
| Model | HS1B6NT090E230 |
| Product type | Solid state relay |
| Housing type | Hockey puck |
| Number of phases | 1 |
| Number of poles | 1 |
| Load type | Resistive |
| Static output type | SCR (silicon controlled rectifier) |
| Switching mode | Zero crossing |
| Control voltage | 18–280 V AC/DC |
| Pick-up voltage | 18 V |
| Drop-out voltage | 8 V |
| Input current | 4.5–6 mA |
| Switching-on time | Maximum half cycle |
| Switching-off time | Maximum half cycle |
| Rated operating voltage | 24–600 V AC |
| Operating frequency | 45–65 Hz |
| Rated operating current AC-51 at 40 °C | 90 A |
| Rated operating current AC-51 at 55 °C | 80 A |
| Minimum operating current | 0.05 A |
| Non-repetitive surge current at 10 ms | 1200 A |
| Off-state leakage current | 1 mA |
| On-state voltage drop | 1.4 V |
| Critical off-state voltage rise | 500 V/µs |
| Input-to-output isolation | 4000 V |
| Input/output-to-metal-base isolation | 4000 V |
| Output protection | TVS |
| I²t | 7200 A²s |
| Thermal resistance, junction to case | 0.4 K/W |
| Required heatsink thermal resistance at rated AC-51 current | ≤0.3 K/W |
| Control terminals | M4 screw |
| Control-terminal tightening torque | 1.2–2 Nm |
| Control conductor size | 0.75–2.5 mm² / AWG 18–14 |
| Load terminals | M5 screw |
| Load-terminal tightening torque | 2–3 Nm |
| Mounting position | Any |
| Fixing | Screw |
| Operating temperature | -55 to +90 °C |
| Storage temperature | -55 to +125 °C |
| Weight | 90 g |
| Quantity per package | 1 |
| Package dimensions | 75 × 49 × 38 mm |
| Package volume | 139.65 cm³ |
| EAN | 8013975321669 |
| HS code | 85365003 |
The HS1B6NT090E230 is a single-phase, single-pole hockey-puck solid state relay rated at 90 A AC-51 at 40 °C, with a 24–600 V AC load range and an 18–280 V AC/DC control input.
The relay accepts an 18–280 V AC/DC control signal, allowing it to interface with a broad range of industrial AC and DC control circuits.
The HS1B6NT090E230 is rated at 90 A AC-51 at 40 °C for resistive loads and 80 A AC-51 at 55 °C.
The relay has a rated operating voltage range of 24–600 V AC and an operational frequency range of 45–65 Hz.
Yes. The HS1B6NT090E230 uses zero-cross switching, which switches the load close to the AC waveform's zero-voltage point to help reduce switching disturbances.
Lovato specifies the HS1B6NT090E230 for resistive loads, making it particularly suitable for applications such as industrial heating elements and electric heaters.
Appropriate heatsinking is required according to load current and ambient conditions. At the specified rated AC-51 current conditions, Lovato specifies a heatsink with thermal resistance of ≤0.3 K/W.
Lovato specifies a non-repetitive peak on-state surge current of 1200 A for 10 ms.
Lovato Electric HS series solid state relays combine silent semiconductor switching, zero-cross operation and high switching endurance for machine builders, panel builders and automation engineers controlling demanding resistive loads in industrial equipment.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...