The Wieland R1.188.0530.1 (SNZ 4052K‑A) is a robust two-hand control safety relay compliant with EN 574 Type IIIC, designed for dual-channel control applications. Featuring synchronous timing, cross-wire monitoring, and up to SIL 3 / PL e safety integrity, this DIN-rail mount logic module ensures operator compliance in industrial machinery.

Key Features & Technical Specifications:

Model: R1.188.0530.1 (SNZ 4052K‑A) two‑hand control relay
Voltage: 24 VAC/DC (50–60 Hz); universal input, screw‑terminal pluggable
Safety Integrity: SIL 3 (IEC 62061), PL e, Cat 4 (ISO 13849‑1); EN 574 Type IIIC logic
Channels & Monitoring: 2 enabling paths with make/break startup inhibit; synchronous time monitoring (<50 ms), cross-wire detection
Contacts: 2 safety contacts (NC + NO) with 6 A thermal current capacity (230 VAC or 24 VDC)
Signaling: 1 feedback output; 3 green LEDs indicate supply, K1, K2 status
Protection & Build: DIN-rail mount; IP40 housing, IP20 terminals; –25 °C to +55 °C operation
Form Factor: Width 22.5 mm, Depth 114 mm, Height 96.5 mm; 0.2 kg

Wieland – R1.188.0530.1 – SNZ 4052K‑A Two‑Hand Control Safety Relay, 24 VAC/DC

Wieland – R1.188.0530.1 – SNZ 4052K‑A Two‑Hand Control Safety Relay, 24 VAC/DC