The 452.4x safety switch device is designed specifically for monitoring GELBAU Contact-Duo safety switch panels, which use an 8.2 kiloohm resistor as an electrical terminal. The 452.4x series is a dual channel design that includes redundancy monitoring. The emergency stop outputs (13-14, 23-24) consist of 2 forced-action relays and include a reset function. A notification or auxiliary contact is available through an additional changeover contact (31, 32, 34). The safety system meets the EN ISO 13849-1:2005 standard as well as the European switch panel standard EN1760-2 with regard to the output switching device.
This manual describes the Gelbau 452.4x safety switch device, which monitors GELBAU Contact‑Duo safety bus bars using an 8.2 kΩ resistor. It covers general information, wiring, function, installation, commissioning, and fault diagnosis.
Technical data such as housing material, dimensions, electrical ratings, and compliance with EN ISO 13849‑1 and EN 62061 are listed, along with safety relay specifications and environmental limits. This manual is written in German.
| Housing material | Polyamid PA 6.6 |
|---|---|
| Protection class | IP20 |
| Dimensions (B × H × T) | 22.5 × 100 × 110 mm |
| Weight | 175‑250 g |
| Maximum load per safety relay output | 4 A |
| Maximum switching voltage | 250 V AC |
| Sensor idle current | ≈ 0.6 mA |
| Mechanical contact life | 3 × 10⁷ cycles |
Press the reset contact (Y1, Y2) briefly to start the device.
Each safety relay contact (13‑14, 23‑24) can be loaded up to 4 A.