MTL5011B Hazardous Area Switch Interface - MTL

MTL5011B Switch/Proximity Detector Interface

The MTL5011B from MTL Instruments is a safety interface for hazardous areas. It connects NAMUR proximity detectors and switches to control systems. This single-channel device provides reliable operation in Zone 0 explosive atmospheres.

Key Technical Specifications

• Brand: MTL Instruments
• Model: MTL5011B
• Product Type: Switch/Proximity Detector Interface
• Channels: 1 channel
• Response Time: 10ms maximum
• Output: Single-pole changeover relay
• Input Standard: NAMUR/DIN 19234
• Unit Weight: 0.13 kg

Hazardous Area Certification

• Switch Location: Zone 0, IIC, T6 hazardous area
• Detector Location: Zone 0, IIC, T4-T6 with certification
• Division Rating: Division 1, Group A hazardous location
• The interface maintains intrinsic safety in explosive atmospheres

Electrical Specifications

• Sensor Voltage: 7 to 9V from 1kΩ ±10% source
• Maximum Current: 40mA at 20V power consumption
• Power Dissipation: 0.75W at 24V maximum
• Isolation: 250V ac/dc between all circuits

Relay Output Characteristics

• Contact Rating AC: 250V ac, 2A, cosø >0.7
• Contact Rating DC: 40V dc, 2A, resistive load
• Relay Type: Single-pole changeover contacts
• External suppression required for reactive loads
• User-selectable phase reversal via top-mounted switches

Safety Parameters

• Safety Voltage: 10.5V maximum
• Internal Resistance: 800Ω
• Safety Current: 14mA maximum
• Maximum Voltage: Um = 250V rms or dc

Frequently Asked Questions

• What areas is the MTL5011B certified for?
  It is certified for Zone 0, IIC, T6 hazardous areas and Division 1, Group A.
• What type of sensors does it support?
  It interfaces with NAMUR/DIN 19234 proximity detectors and switches.
• How fast is the response time?
  The relay responds within 10ms maximum from input detection.
• Can I reverse the output phase?
  Yes, phase reversal is user-selectable via top-mounted switches.