Lovato HS2B6NN051D024 is a two-phase 50 A hockey-puck solid state relay with 10–30 V DC control, 24–600 V AC load switching, SCR zero-crossing outputs, 1200 A surge capability and screw terminals for industrial resistive-load control.
£147.33
The Lovato HS2B6NN051D024 is a high-performance two-phase solid state relay (SSR) designed for reliable electronic switching of resistive AC loads in industrial control applications. As part of the Lovato HS2B solid state relay series, its robust hockey-puck construction combines two-phase semiconductor switching with secure screw terminals for installation in machinery and electrical control panels.
The HS2B6NN051D024 uses SCR semiconductor outputs with zero-crossing switching, helping minimise electrical disturbances when compatible AC loads are switched. It accepts a 10–30 V DC control signal and operates with loads across a wide 24–600 V AC rated voltage range, making it suitable for interfacing with PLCs, temperature controllers and other low-voltage electronic control systems.
Rated at 50 A AC-51 at both 40 °C and 55 °C for resistive loads when correctly cooled, the HS2B6NN051D024 provides substantial two-phase switching capability. Its 1200 V blocking voltage, exceptional 1200 A surge-current capability and 4000 V input-to-output isolation make it a dependable solution for industrial heating, process control and other frequently switched resistive loads.
Two-phase solid state relays provide electronic switching across two phases without the moving contacts found in conventional electromechanical switching devices. This enables silent operation, rapid switching and excellent endurance, making SSR technology particularly valuable for industrial heating and process applications involving frequent ON/OFF cycles.
The Lovato HS2B6NN051D024 combines two-phase switching with zero-crossing operation, a broad 24–600 V AC operating range and a low-voltage DC control input. Its 50 A AC-51 rating and high 7200 A²s I²t withstand capability make it suitable for demanding resistive loads, while correct heatsink selection and thermal management are essential for achieving the specified continuous current performance.
| Manufacturer | Lovato Electric |
|---|---|
| Series | HS2B Solid State Relays |
| Model | HS2B6NN051D024 |
| Product type | Hockey-puck two-phase solid state relay |
| Number of poles | 2 |
| Control voltage | 10–30 V DC |
| Operating voltage pick-up | 10 V |
| Operating voltage drop-out | 2 V |
| Input current | 6–24 mA |
| Input reverse voltage | 32 V |
| Switching-on time | Half cycle maximum |
| Switching-off time | Half cycle maximum |
| Static output type | SCR |
| Switching mode | Zero crossing |
| Rated operating voltage | 24–600 V AC |
| Blocking voltage | 1200 V |
| Operational frequency | 45–65 Hz |
| Rated operating current AC-51 at 40 °C | 50 A |
| Rated operating current AC-51 at 55 °C | 50 A |
| Minimum operational current | 0.05 A |
| Non-repetitive surge peak current at 10 ms | 1200 A |
| Off-state leakage current | 1 mA |
| On-state output voltage drop | 1.2 V |
| Critical rate of rise of off-state voltage | 500 V/µs |
| Input-to-output isolation | 4000 V |
| Input/output-to-metal-base isolation | 4000 V |
| Specific let-through energy I²t | 7200 A²s |
| Junction-to-case thermal resistance | 0.3 K/W |
| Required heatsink at rated AC-51 current | ≤0.3 K/W |
| Control terminals | Screw |
| Control terminal tool | 3.5 mm blade |
| Control terminal conductor size | 0.75–2.5 mm² |
| Control terminal conductor range | AWG 28–12 |
| Control terminal tightening torque | 0.5 Nm |
| Load terminals | M5 screw |
| Load terminal tool | PZ2 |
| Load terminal tightening torque | 2–3 Nm |
| Operating temperature | -55 to +90 °C |
| Storage temperature | -55 to +125 °C |
| Product weight | approx. 100 g |
| Quantity per package | 1 |
| Package dimensions | 69 × 56 × 48 mm |
| Package volume | 185.472 cm³ |
| EAN | 8013975321713 |
| HS code | 85365003 |
| Certifications | UL, CSA and VDE |
The HS2B6NN051D024 is a two-phase solid state relay designed for electronic switching of resistive AC loads, making it particularly suitable for industrial heating, process control, machinery and automation applications.
The relay is rated at 50 A AC-51 at 40 °C and 50 A AC-51 at 55 °C for resistive loads when installed with the appropriate thermal management.
The HS2B6NN051D024 accepts a 10–30 V DC control signal, making it suitable for use with compatible PLC outputs, temperature controllers and other low-voltage electronic control devices.
The Lovato HS2B6NN051D024 has a rated operating voltage range of 24–600 V AC, an operational frequency range of 45–65 Hz and a blocking voltage of 1200 V.
Yes. Appropriate thermal management is required according to the actual load current, ambient temperature and duty cycle. Lovato specifies a heatsink thermal resistance of ≤0.3 K/W for operation at the rated 50 A AC-51 current at 40 °C and 55 °C.
Lovato HS solid state relays provide panel builders, machine manufacturers and automation engineers with robust semiconductor switching solutions for silent, reliable and frequent control of demanding industrial electrical loads.
● Service Agreements
Credit Accounts
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
● frequently asked questions
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
● latest blog
LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...
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...