Description
The Pilz 774104 safety relay is a standalone protection relay designed for reliable monitoring of emergency stop circuits and safety gates in industrial control systems. It operates on 115 VAC supply voltage and provides multi-channel input evaluation with monitored start and safety-rated outputs.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Pilz |
| Category |
Safety Relays |
| Part Number |
774104 |
| Subcategory |
Safety Control Relays |
| Relay Type |
Standalone safety relay |
| Supply Voltage |
115 V AC |
| Supply Frequency |
50–60 Hz |
| Power Consumption |
8 VA |
| Input Configuration |
2-channel wiring, intrinsically safe, short-circuit detection |
| Safety Outputs |
3 N/O, 1 N/C, 2 N/O intrinsically safe |
| Max Switching Voltage AC1 |
240 V |
| Max Switching Current AC1 |
4 A |
| Max Switching Voltage DC1 |
24 V |
| Max Switching Current DC1 |
2 A |
| Utilization Category |
AC15 / DC13 per EN 60947-5-1 |
| Ambient Temperature |
-20 to +55 °C |
| Humidity Rating |
93% RH at 40 °C |
| Connection Type |
Screw terminals |
| Conductor Size |
24–10 AWG |
| Dimensions (H x W x D) |
87 x 112.5 x 121 mm |
| Weight |
725 g |
Information About 774104
The 774104 is part of the Pilz safety relay portfolio developed for dependable safety monitoring in fixed industrial applications. It is built with a robust enclosure and integral screw terminals, allowing secure installation in control cabinets. The relay supports two-channel intrinsically safe input wiring with detection of shorts across contacts, ensuring high diagnostic coverage. Designed for emergency stop and safety gate monitoring, it operates with a monitored start function using a 115 VAC control supply.
Key Features
- Two-Channel Safety Inputs: Supports redundant intrinsically safe wiring with short-circuit detection for enhanced fault monitoring.
- Multiple Safety Outputs: Provides 3 normally open and 1 normally closed safety contacts plus additional intrinsically safe outputs.
- Monitored Start Function: Ensures controlled restart behavior after safety events using a monitored start circuit.
- Wide Contact Ratings: Supports switching up to 240 VAC and 4 A in AC15 applications for flexible system integration.
- Industrial Power Supply: Operates directly on 115 VAC at 50–60 Hz without external power conversion.
- Screw Terminal Connections: Fixed screw terminals support reliable wiring with conductors from 24 to 10 AWG.
- Compact DIN-Rail Design: Optimized dimensions allow efficient use of control panel space.
The 774104 delivers the reliability and precision required for emergency stop circuits and safety gate monitoring in industrial safety control systems.
