Name: WAGO 859-795 Optocoupler Module DIN Rail Mount - INOSAKI
SKU: Wago-859-795
Price: 47.37 USD
Availability: InStock

Technical Overview

5VDC input to 3-30VDC output optocoupler module with 0.1A continuous current, 10kHz switching frequency, and DIN-rail mounting for industrial isolation.

Key Features

Optocoupler module for galvanic isolation.
Nominal input voltage of 5 VDC.
Output voltage range of 3 to 30 VDC.
Limiting continuous current of 0.1 A.
High switching frequency up to 10 kHz.
CAGE CLAMP® connection technology for solid and fine-stranded conductors (0.08 – 2.5 mm²).
Red LED status indication.
Designed for DIN-35 rail mounting.
Slim design with a width of 6 mm.
Suitable for railway applications (EN 50121-3-2, EN 61373).
Wide operating temperature range of -40 to +70 °C.

Technical Specification Matrix

Parameter	Value
Nominal input voltage U_N	DC 5 V
Input voltage range (low level)	DC 0 – 0.8 V
Input voltage range (high level)	DC 2 – 6.25 V
Nominal input current at U_N	17 mA
Limiting continuous current	0.1 A
Nominal output voltage	DC 24 V
Output voltage range	DC 3 – 30 V
Max. voltage drop at output	DC 1 V
Leakage current at nominal voltage	25 µA
Turn-on time	10 µs
Drop-out time	50 µs
Switching frequency	10 kHz
Status indication	LED red
Dielectric strength, control/load circuit (AC, 1 min)	2.5 kVrms
Connection technology	CAGE CLAMP®
Solid conductor	0.08 – 2.5 mm² / 28 – 14 AWG
Fine-stranded conductor	0.08 – 2.5 mm² / 28 – 14 AWG
Strip length	5 – 6 mm / 0.2 – 0.24 inch
Type of mounting	DIN-35 rail
Color	gray
Surrounding air (operating) temperature at U_N	-40 – 70 °C
Surrounding air (storage) temperature	-40 – 70 °C
Processing temperature	-25 – +50 °C
Standards/specifications	EN 60664-1; EN 61000-6-3; EN 61000-6-4; EN 50121-3-2; EN 61373; UL 508
Relative humidity	5-95% without condensation
Physical Weight (kg)	0.02
Dimensions L x W x H (cm)	9.1 x 0.6 x 5.6

Industrial Applications

1. Signal Isolation in Railway Control Systems

This optocoupler module is ideal for providing galvanic isolation between low-voltage control circuits (5 VDC) and higher-voltage load circuits (3-30 VDC) in railway signaling and control systems. Its compliance with railway standards (EN 50121-3-2, EN 61373) and wide operating temperature range (-40 to 70 °C) make it suitable for harsh rail environments.

Problem Solved

Prevents ground loops and protects sensitive control electronics from voltage spikes and noise originating from the load side, crucial for reliable and safe operation in railway infrastructure.

Galvanic isolationRailway standardsEN 50121-3-2EN 61373DC 5V controlDC 3-30V output-40 to 70 °C operating temperature

2. Industrial Automation Digital Signal Interfacing

The WAGO 859-795 can be used for interfacing digital signals from PLCs or microcontrollers (5 VDC logic) to industrial actuators or indicators operating at higher DC voltages (e.g., 24 VDC). Its CAGE CLAMP® technology ensures quick and secure wiring in industrial panels, and its compact 6 mm width saves space on DIN rails.

Problem Solved

Safely translates control signals between different voltage levels while maintaining electrical separation, preventing damage to control equipment from load-side faults or back EMF.

PLC interfacingDigital I/OVoltage level shiftingCAGE CLAMP®DIN-rail mounting0.1A continuous current

3. High-Speed Data Switching in Process Control

With a switching frequency of 10 kHz and fast turn-on/drop-out times (10 µs / 50 µs), this optocoupler module is suitable for isolating and switching fast digital signals in process control applications where quick response is critical. The red LED provides immediate visual status feedback.

Problem Solved

Ensures rapid and reliable isolation for high-frequency switching applications, preventing signal distortion and ensuring precise timing in control loops.

High switching frequency10 kHzFast response time10 µs turn-on50 µs drop-outRed LED indicatorProcess control