24VDC 4 channel Relay Module with screw wiring & Protection cap DS1H4-16
Product Overview
The Denki Seigyo DS1H4-16 is a premium multi-channel relay module designed for high-performance industrial control, automation, and power distribution applications.
Available in 4, 8, and 16 channel configurations, it features 24VDC control voltage, screw-type wiring terminals, LED indication per channel, and an integrated protective cap for enhanced safety and durability.
Engineered with optocoupler isolation, high-quality PCB layout, and industrial-grade components, this module ensures long operational life, stable performance, and easy integration into any PLC or automation system.
Key Characteristics
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Available in 4, 8, and 16 channel configurations for versatile system expansion
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24VDC logic control input – compatible with PLCs, microcontrollers, and DCS systems
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Each relay rated up to 10A switching capacity for AC/DC loads
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Individual LED indicators for quick relay status monitoring
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Optocoupler input isolation for signal protection and electrical safety
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Screw-type terminal connectors for secure wiring
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Removable transparent protective cap for dust, shock, and contact safety
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Industrial-grade relay and PCB design for reliable operation under continuous load
Versatile and Reliable Industrial Relay Module
The DS1H4-16 series combines signal isolation, power control, and easy wiring in a compact, professional-grade module.
It provides safe and efficient switching between low-voltage logic signals and high-power AC/DC loads.
Built for industrial automation panels, process equipment, and machine interfaces, it ensures noise immunity, electrical safety, and long service life under rigorous conditions.
24VDC 4 channel Relay Module with screw wiring & Protection cap DS1H4-16
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | DS1H4-16 (Available in 4 / 8 / 16 Channels) |
| Type | Multi-Channel Relay Output Module |
| Manufacturer | Denki Seigyo |
| Number of Channels | 4 / 8 / 16 Independent Relays |
| Control Voltage | 24VDC |
| Relay Type | SPDT (1C) Mechanical Relay |
| Contact Rating | 10A @ 250VAC / 30VDC (Resistive Load) |
| Contact Material | Silver Alloy |
| Coil Power Consumption | Approx. 0.9W per channel |
| Optocoupler Isolation | Yes – galvanic separation between input and load |
| Input Signal Type | DC logic (Low active / Sink input) |
| Response Time | Operate ≤ 10 ms / Release ≤ 5 ms |
| LED Indicator | 1 per channel (Relay ON status) |
| Protection Features | Flyback diode, surge suppression, over-voltage protection |
| Wiring Type | Screw terminal block |
| Terminal Pitch | 5.08 mm (industrial standard) |
| Protective Cover | Transparent safety cap (removable) |
| Insulation Resistance | ≥ 100 MΩ @ 500VDC |
| Dielectric Strength | 2000VAC (Input–Output, 1 min) |
| Operating Voltage Range | 19VDC – 28VDC |
| PCB Material | FR-4, 2 oz copper, high thermal tolerance |
| Mounting Type | Panel or DIN Rail (optional adapter) |
| Ambient Temperature | −25°C to +70°C |
| Storage Temperature | −30°C to +85°C |
| Humidity Range | 45–85% RH (non-condensing) |
| Dimensions (L × W × H) | 4CH: 95×72×22 mm / 8CH: 145×72×22 mm / 16CH: 190×72×22 mm |
| Weight | 4CH: 120 g / 8CH: 180 g / 16CH: 260 g |
| Compliance | CE, RoHS |
Key Features
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Multiple channel options (4, 8, 16) for flexible control systems
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Optically isolated control inputs for maximum safety
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High current switching capability up to 10A per channel
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LED indicators for easy diagnostics and monitoring
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Protective cover ensures wiring safety and prevents dust ingress
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Screw-type terminal connectors for reliable installation
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Long life span and low maintenance
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Compact, durable design for industrial use
Applications
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PLC I/O expansion modules
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Industrial automation and process control
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Machine tools and equipment panels
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Building automation and lighting control
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Power distribution and monitoring systems
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Control cabinets and relay boards
Ordering Information
| Model | Control Voltage | Channels | Relay Type | Load Capacity | Wiring Type | Protection Cover | Indicator |
|---|---|---|---|---|---|---|---|
| DS1H4-16-4C | 24VDC | 4 Channels | SPDT (1C) | 10A @ 250VAC / 30VDC (Each) | Screw Terminal | Included | LED per Channel |
| DS1H4-16-8C | 24VDC | 8 Channels | SPDT (1C) | 10A @ 250VAC / 30VDC (Each) | Screw Terminal | Included | LED per Channel |
| DS1H4-16-16C | 24VDC | 16 Channels | SPDT (1C) | 10A @ 250VAC / 30VDC (Each) | Screw Terminal | Included | LED per Channel |
Product Summary
The Denki Seigyo DS1H4-16 Premium Relay Module offers safe, efficient, and scalable multi-channel control for industrial systems.
With 4/8/16 channel configurations, 24VDC control, optocoupler isolation, and protective cover design, it provides enhanced safety, reliability, and operational clarity in automation panels.
Engineered for long life, noise immunity, and ease of integration, it’s a premium solution for PLC I/O expansion, process automation, and power control systems.
