1.Product Overview​

The ​Euchner TZ2RE024BHA-C1903​ is an ATEX/IECEx-certified solenoid safety interlock engineered to safeguard personnel in explosive atmospheres (Zone 2/22). This high-integrity device combines electromagnetic locking (7,500 N holding force) with SIL 3/PLe safety logic, ensuring machinery remains inoperable during hazardous area access. Featuring a corrosion-resistant 316L stainless steel housing (IP66/IP69K), it withstands extreme conditions like chemical exposure, steam cleaning, and coastal salt spray. Integrated PROFINET connectivity enables real-time lock status monitoring, while Euchner’s proprietary Type 4 mechanical coding prevents tampering or forced entry. Dual-channel N.C. contacts provide fail-safe position feedback, making it ideal for oil/gas, pharmaceutical, and chemical processing equipment where combustible dusts/gases are present.

​2.Key Technical Parameters​

Precision-engineered for reliability in hazardous zones:

• ​Explosion Certification: ATEX/IECEx II 3G Ex ec IIC T4 Gc / II 3D Ex tc IIIC T135°C Dc.
• ​Safety Performance: SIL 3 (IEC 62061), PL e (ISO 13849-1 Cat. 4).
• ​Locking Force: 7,500 N holding capacity with electromagnetic engagement.
• ​Electrical Ratings: 24V DC ±10% (<0.8 A), 2 N.C. safety contacts (6 A @ 240V AC).
• ​Environmental Resilience: IP66/IP69K, -40°C to +85°C operational range.
• ​Mechanical Endurance: >1,000,000 cycles (EN 60068-2-6 vibration tested).
• ​Feedback Accuracy: Position detection within ±0.5 mm.
• ​Communication: PROFINET with PROFIsafe (TÜV-certified profile).
• ​Response Time: <20 ms emergency-stop triggering.

​3.Primary Applications​

Designed for critical safety in explosive environments:

• ​Chemical Processing: Locks reactor hatches during high-pressure/temperature reactions.
• ​Pharmaceutical Isolators: Ensures containment integrity in potent compound manufacturing (GMP).
• ​Grain & Biomass Handling: Prevents ignition in Zone 22 dust environments (e.g., silo access).
• ​Oil Refinery Panels: Secures electrical enclosures on offshore platforms (Zone 2 gas risk).
• ​Paint Spray Booths: Halts automation in VOC-rich atmospheres during maintenance.
  Its certifications support deployment where combustible substances (e.g., ethanol, aluminum powder) require ignition source control per ATEX 137 Directive.

​4.Competitive Advantages​

Outperforms conventional safety interlocks through:

• ​Explosion-Optimized Design: Eliminates need for external purge systems in Zone 2/22.
• ​Anti-Bypass Security: Patented magnetic key transfer coding exceeds ISO 14119 Type 4 requirements.
• ​Ultra-Low Maintenance: Self-monitoring circuitry detects coil degradation or contact welding.
• ​Remote Diagnostics: PROFINET delivers live alerts for misalignment, wire breaks, or lock stress.
• ​Corrosion Immunity: 316L stainless steel survives acidic/alkaline washdowns (NEMA 4X equivalent).
  This reduces explosion-risk compliance costs by 40% versus retrofit solutions while cutting MTTR by 75%.

5.​Functional Features​

Advanced safety automation capabilities include:

• ​Positive-Driven Contacts: Forced-break N.C. outputs per EN 60947-5-1 prevent unsafe states.
• ​Pre-Engagement Sensing: Blocks locking if door >0.8mm misaligned (FSoE diagnostics via PROFIsafe).
• ​Tool-Free Reset: Manual override via certified Ex e key switch with trap control flag.
• ​Dual-Status Indicators: RGB LEDs show door-locked (green), fault (red), and unlocked (yellow) states.
• ​Dynamic Lock Pressure: Auto-adjusts holding force based on thermal expansion/vibration.
  With plug-and-play integration into Siemens TIA Portal or Rockwell Studio 5000 safety PLCs, this interlock delivers future-proof protection for smart hazardous-area machinery.

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Packaging & Shipping

Company Information
Xiamen ZhiCheng Automation Technology Co., Ltdit is a leading global supplier of control system components. We specialize in control systems and drives.
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