FOTEK KSR-40DA-H Single-Phase Solid State Relay DC Control

Description

The FOTEK KSR-40DA-H is a high-reliability, single-phase solid state relay (SSR) engineered for demanding industrial switching applications. Utilizing DC control to manage high-voltage AC loads, this component ensures precise thermal and electrical management without the mechanical wear associated with traditional contactors. Built to Original Engineering standards, it provides seamless Technical Compatibility with existing PLC and PID control architectures, optimizing system uptime and reducing maintenance cycles.

Technical Specifications:
Brand: FOTEK
Model: KSR-40DA-H
Component Type: Single-Phase Solid State Relay (SSR)
Control Method: Zero Crossing Switching
Input Control Voltage: 4~32VDC
Output Load Voltage: 90~480VAC (High Voltage Series)
Rated Load Current: 40A
Turn-On Time: < 10ms
Turn-Off Time: < 10ms
Leakage Current: < 5mA
Dielectric Strength: 2500VAC / 1 minute
Isolation Resistance: > 50M Ohm / 500VDC
Operating Temperature: -20°C to +80°C
Housing Material: Flame-retardant engineering plastic
Base Plate: Aluminum (Heatsink required for optimal 40A operation)
Weight: 105g ± 5g

Industrial Application:
The KSR-40DA-H is specifically designed for high-frequency switching environments such as plastic injection molding machines, industrial extrusion lines, and commercial packaging equipment. In these applications, precise temperature control is critical. By utilizing zero-crossing switching, this SSR eliminates electrical noise and transient voltage spikes, ensuring stable power delivery to resistive heating elements. Its robust design guarantees consistent performance even in environments with elevated ambient temperatures, provided adequate heat dissipation is maintained.

Procurement & Lifecycle:
Ensuring rapid Lead Time for critical replacement parts is essential for minimizing production downtime. This FOTEK solid state relay serves as an exact drop-in replacement for legacy systems, offering extended lifecycle value and superior operational stability for high-amperage AC loads.

Key Attributes
Brand Name: FOTEK
Model Number: KSR-40DA-H
Type: Single-phase
Relay Type: Single-phase
Mounting Type: Screw
Place of Origin: Taiwan, China
Description: -
Application: Load heating
Output Type: Exchange
Coil Type: DC control AC
Circuit: -
Connector Type: -
Voltage - Output: 90~480VAC
Contact Rating (Current): 40A
Voltage - Input: 4~32VDC
Switching Voltage: <3.5VDC
Current - Input: -
Contact Form: -
Voltage - Load: -
On-State Resistance (Max): -
Current - Output: -
Termination Style: -
Load Current: -
Coil Current: -
Coil Voltage: -
Series: KSR-DA
Features: -
Model: KSR-40DA-H
Rated current: 40A
Fusing current: 664A²S
Withstand breakthrough current: 410A
Withstand breakthrough voltage: 1200VAC min.
Output voltage: 90~480VAC
Lnput voltage: 4~32VDC
Turn off voltage: <3.5VDC

Packaging and Delivery
Selling Units: Single item
Single package size: 11X8.5X4.5 cm
Single gross weight: 0.100 kg