KSD240D5-W (037) Solid State Relay, 4-32VDC Input, 240VAC 5A SSR

The KSD240D5-W (037) Solid State Relay is a high-performance switching device designed for reliable and efficient control of AC loads in industrial, commercial, and automation applications. Built with advanced opto-isolated semiconductor technology, it delivers silent operation, long service life, and fast switching without the wear and maintenance associated with mechanical relays.

This model supports a wide and flexible control voltage range of 4VDC to 32VDC, allowing it to interface easily with PLC systems, microcontrollers, sensors, and industrial control outputs. Depending on configuration, it can also operate within segmented ranges (4-15VDC or 15-32VDC), making it highly adaptable for different control environments. With low input power requirements, it ensures efficient triggering and stable performance.

On the output side, the KSD240D5-W is designed for AC load switching with a voltage range of 48VAC to 530VAC, making it suitable for a wide variety of industrial-grade applications. It supports a continuous load current range from 0.1A up to 5A, providing higher capacity compared to standard 3A SSR models while maintaining stable and efficient operation.

The relay features high EMC (electromagnetic compatibility) capability, ensuring stable performance even in electrically noisy environments. Its opto-isolated design provides strong separation between control and load circuits, with dielectric isolation exceeding 4000VAC RMS, ensuring safety and protecting sensitive control electronics.

A key feature of this SSR is its high inrush current handling capability, making it suitable for loads such as motors, transformers, and heating elements that draw large startup currents. This improves reliability and reduces the risk of component failure in demanding applications.

The KSD240D5-W is also ROHS compliant, making it environmentally safe and suitable for modern industrial standards. Its PCB-mounted design allows for compact integration into control boards and automation systems.

Features

Solid State Relay (SSR) for AC load switching

Wide 4-32VDC control input range

AC load switching range: 48-530VAC

5A maximum load current capacity

High EMC immunity for industrial environments

High inrush current handling capability

Opto-isolated input/output (>4000VACrms)

Silent operation with no mechanical wear

Fast switching with no contact bounce

ROHS compliant and environmentally safe

PCB mount design for compact integration

High reliability and long operational life

Specifications

Model: KSD240D5-W (037)

Device Type: Solid State Relay (SSR)

Control Voltage: 4-32VDC (also supports 4-15VDC / 15-32VDC ranges)

Load Voltage Range: 48-530VAC

Nominal Load Voltage: 240VAC class

Load Current Range: 0.1-5A

Mounting Type: PCB Mounted

Isolation: >4000VAC RMS opto-isolation

EMC Performance: High immunity

Inrush Current Capability: High

Compliance: ROHS

Applications

Industrial automation systems

PLC output switching

Heating control systems

Lighting control panels

HVAC systems

Motor and fan control (light to medium duty)

Packaging and production machinery

Power distribution control systems

Building automation

General-purpose AC load switching

What's in the box
1 x KSD240D5-W (037) Solid State Relay, 4-32VDC Input, 240VAC 5A SSR