MTL5021 Intrinsically Safe Barrier by MTL | 45mA Output

MTL5021 Intrinsic Safety Barrier: Safe Control for Hazardous Areas

The MTL5021 lets you safely operate devices in explosive zones (Zone 0/IIC) from non-hazardous areas. Drive low-power IS loads like LEDs with reliable isolation. 45mA output, 24V DC input.

Key Features

• ✔ Hazardous-Area Certified – Zone 0, IIC, T4-T6 / Div. 1, Group A
• ✔ 45mA Output – Safe for intrinsically safe (IS) circuits
• ✔ 24V DC Input (20-35V range)
• ✔ Earth Leakage Detection (Terminal 3)
• ✔ LED Status Indicator (Yellow = active)

Technical Specifications

• Model: MTL5021
• Input Voltage: 20-35V DC
• Output Voltage: 12.85V (min) to 24V (max)
• Current Limit: 45mA (hazardous side)
• Power Dissipation: 1.4W (24V) / 1.8W (35V max)
• Safety Ratings: 25V, 170Ω, 147mA, Um = 250V

Terminal Functions

• 1: Output (–)
• 2: Output (+)
• 3: Earth Leakage Detection
• 11: Supply (–)
• 12: Supply (+)

Warranty & Shipping

• ✅ 12-Month Warranty
• 🚚 Fast Global Shipping: FedEx, UPS, DHL

Compare Similar Models

• MTL5043 – HART-compatible signal conditioner
• MTL5032 – Pulse isolator for Zone 0

Expert FAQs

• Q: Can MTL5021 drive relays in hazardous areas?
  A: No, only low-power IS loads (e.g., LEDs, sensors).
• Q: Is external grounding required?
  A: Yes, use Terminal 3 for earth leakage detection.
• Q: What’s the max cable length?
  A: Depends on capacitance; keep under 147mA limit.
• Q: Can I use it in Zone 2?
  A: Yes, but it’s rated for stricter Zone 0/Div. 1.
• Q: Replacement LED indicator available?
  A: Yes, contact MTL for spare parts.