Overview
The Euchner NZ1VZ-528 E safety switch is a non-guarded-locking electromechanical safety interlock designed for machinery access control and emergency shutdown applications. The unit features cable entry M20 x 1.5, 1 position driven contact, and 1 NO contacts. Built with die-cast aluminum housing and marketed by Euchner USA for industrial safety systems, this switch is suited for OEM integrations, retrofit safety upgrades, and panel-mount machine guarding applications.
Key Features
- Slow-action switching contact: 1NC/1NO switching element without LED, designed to prevent chattering and ensure positive control
- Metal housing: Die-cast aluminum enclosure rated for industrial environments
- M20 x 1.5 cable entry: Standard industrial cable gland thread for secure connector mounting
- Separate actuator: Actuator sold separately, allowing flexible system configuration
- Compact design: Suitable for tight mounting spaces and door-gap applications
Technical Specifications
The NZ1VZ-528 E meets international safety standards and supports both AC and DC control circuits:
- AC switching: 4 amp, 230 VAC
- DC switching: 24 VDC
- Contact arrangement: 1NC / 1NO
- Power consumption: 9W
- Operating temperature: -25 to +80°C
- IP rating: IP65
- Cable entry: Thread M20 x 1.5 for cable glands
- Weight: 0.65 lbs
Typical Applications
The Euchner NZ1VZ-528 E is widely deployed in:
- Machine guard and access door interlocks on CNC, injection molding, and stamping equipment
- Emergency stop circuits and safe shutdown sequences
- Personnel protection zones requiring monitored safety switches
- Retrofit upgrades on existing industrial machinery
- Control systems requiring open-circuit-current safety principles
Compatibility & Replacements
Compatible With
- 24V DC control circuits and PLC input modules
- 230V AC control panel circuits
- Industrial safety relay modules and safety-rated controllers
- Machine control systems and HMI interlocks
- Emergency shutdown (E-stop) networks
Replaces / Drop-In Replacement For
- NZ1VZ-528E-M (Order no. 090671) — direct equivalent, M20 cable entry, 1NC/1NO without LED
- NZ1VZ-528EL220-M (Order no. 082121) — LED variant of same base model
- Similar Euchner NZ.VZ series safety switches with same M20 footprint and contact configuration
Works With
- Euchner actuator modules (sold separately, required for operation)
- Industrial safety standards: EN 954-1 Category 3, ISO 13850 emergency stop circuits
- Rockwell ControlLogix and CompactLogix safety I/O modules
- Siemens S7-1200/1500 safety controllers with TIA Portal programming
- Standard 24V DC and 230V AC industrial control wiring
