Email: sales@slxytech.com
WhatsApp / Wechat：8617062388866
Phone：+86 17062388866Description
The PILZ 301120 is a compact safety relay from the PNOZ s3 series, engineered by Pilz GmbH for fail-safe monitoring of emergency stops, safety gates, and light curtains in machinery and industrial automation. As a versatile base unit, it provides reliable switching of safety circuits with two normally open (NO) safety contacts and one auxiliary contact. Designed to meet stringent international safety standards, including SIL 3 (IEC 61508), PL e (ISO 13849), and Cat. 4 (EN 954-1), the PNOZ s3 301120 ensures personnel and equipment protection in high-risk applications like presses, robots, and conveyor systems. Its pluggable screw terminals and space-saving 22.5 mm width simplify integration into control panels, while integrated LED diagnostics enable rapid fault localization.
PILZ 301120
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | 301120 |
| Manufacturer | Pilz (PNOZ s3 Series) |
| Product Type | Safety Relay |
| Safety Standards | SIL 3, PL e, Cat. 4, EN 60204-1 |
| Contacts | 2 NO (Safety), 1 NC (Auxiliary) |
| Contact Rating | 6 A AC-15 / 6 A DC-13 (250 VAC/24 VDC) |
| Max. Switching Voltage | 250 VAC/24 VDC |
| Operating Voltage | 24 VDC (19.2–28.8 VDC) |
| Response Time | ≤ 20 ms |
| Mechanical Life | 10⁷ cycles |
| Operating Temperature | -25°C to +55°C |
| Terminals | Pluggable screw clamps (0.25–2.5 mm²) |
| Dimensions | 22.5 x 99 x 114 mm (W x H x D) |
| Certifications | UL, CE, cULus, TÜV |
Main Features and Advantages
Fail-safe architecture: Dual-channel redundancy with cross-monitoring detects contact welding and internal faults, forcing a safe shutdown. The PILZ 301120’s latching function maintains shutdown state until manual reset, preventing unintended restarts.
Diagnostic visibility: Multicolor LEDs indicate power status, fault conditions, and relay state—reducing troubleshooting time by 70%. Manual test pulse function validates force-guided contact integrity without external tools.
Installation efficiency: Unified terminal numbering and color-coded labels prevent wiring errors. Compatible with PNOZsigma expansion modules (e.g., time delays or monitoring modules) for scalable safety functions. DIN-rail mounting with push-in design enables tool-less installation.
Application Field
The PILZ 301120 secures critical machinery:
Automotive: Monitors E-stops on robotic welding cells and press brake light curtains.
Packaging: Safeguards filler machines via safety gate interlocks with guard locking.
Material Handling: Controls emergency stops for palletizer conveyors and AS/RS systems.
Woodworking: Triggers saw shutdowns via foot switches or cable pull devices.
In semiconductor fabs, its 24VDC operation prevents noise interference in sensitive environments.
PILZ 301120
Related Products
PNOZ s4 774304: Multi-function safety relay with 8 contacts.
PNOZ s5 774130: Compact relay with integrated start interlock.
PNOZ m EF 1AC 774810: Modular safety controller.
PITmode 1AC 774370: Mode selector for safety zones.
PNOZ X 2.1P 774111: Configurable safety relay with diagnostics display.
