The LN Series of panel mounted Solid State Relays offer reliable back-to-back SCR switching up to 75 Amps at 528 VAC, coupled with a patented trigger circuit
design which allows the SSR to switch resistive loads with minimal electromagnetic noise generated, ideal for use in commercial, residential and medical
applications.
UL recognized and TUV certified, the LN series offers superior performance in applications that demand reliable switching and low emitted noise.
Features
• Rating up to 75A @48-528 VAC per channel
• Zero Voltage Turn-On Switching
• Conformance with IEC60947-4-3 Environment B for low voltage domestic,
commercial and light industrial locations/installations
All parameters at 25°C unless otherwise specified.
Output will self trigger beyond 450-600 Vpk for LND24XX or 900-1200 Vpk for LND44XX models, not suitable for capacitive loads.
(3)
Heat sinking required, see derating curves.
(4)
Increase minimum voltage by 1 V for operations from -20 to -40°C.
(5)
No freezing or condensation allowed.
(6)
For single surge pulse Tc=25°C; Tj=125°C.
(7)
Load can be wired to either SSR output terminal 1 or 2.
(1)
(2)
INSTALLATION INSTRUCTIONS
Mounting on Heat Sinks
Select adequate heat sink (see thermal derating curves).
"Be sure to use a thermal pad or thermal compound (0.006 - 0.008 in layer thickness recommended) SSR and the selected heat sink.
thickness recommended) between the SSR and the selected heat sink."
Before applying full torque tighten down both screws until they contact the baseplate. Then, tighten them to 20 lb-in (2.2 Nm).
For optimal thermal performance heat sink fins should be oriented vertically to promote natural convection airflow.
Mounting on Panels
Locate the panel section on which the SSR will be mounted. Panel mount surface must provide adequate heat sinking capability, uncoated, clean, flat (0.004 in/in
recommended) and preferably aluminum.
Be sure to use a thermal pad or thermal compound (0.006 - 0.008 in layer thickness recommended) between the SSR and the panel.
SSR mounting slots have a diameter of 0.2 in (5.0 mm). Two screws are needed (not included) to mount the SSR onto panel. Choose screw length considering the
mounting surface hole depth and that the SSR baseplate thickness is 0.125 in (3.2 mm).
Before applying full torque tighten down both screws until they contact the baseplate. Then, tighten them to 20 lb-in (2.2 Nm).
