MTL3021 Hazardous Area Controller | Switch-to-Zone 0 Interface

MTL3021 Hazardous Area Controller: Simple Switch-to-Explosive Zone Solution

Safe Control for Hazardous Locations

The MTL3021 connects safe-area switches to hazardous-zone devices. This compact interface drives solenoids, alarms, and LEDs in explosive areas with complete electrical isolation.

Technical Specifications

• Brand: MTL
• Model: 3021 Series
• Input Voltage: 20-35V DC
• Max Output: 28V @ 65mA
• Ripple: <0.5% peak-to-peak
• Power Consumption: 95mA @24V
• Response Time: 10ms typical
• Fuse: 200mA semi-time-lag
• Isolation: 250V AC/DC
• Operating Temp: -40°C to +85°C

Safety Approvals

• ATEX/IECEx Zone 0, IIC, T4-T6
• Division 1, Group A compliant
• FM Entity Parameters: Voc=28V, Isc=93mA

Package & Support

• Contents: MTL3021 unit, documentation
• Warranty: 12-month coverage
• Shipping: FedEx/UPS/DHL global delivery

Expert Questions Answered

• Q: Maximum load current?
  A: 65mA continuous output
• Q: LED compatibility?
  A: Yes – drives non-energy-storing devices
• Q: Power calculations?
  A: Input current = 20mA + (35V/Vin)×Iout
• Q: Replacement fuse type?
  A: 200mA semi-time-lag (DIN 41571)
• Q: Response to switch changes?
  A: 10ms activation/deactivation