MTL7707P+ Intrinsically Safe Barrier – MTL7700 Series
The MTL7707P+ is a two-channel intrinsically safe shunt-diode barrier designed for reliable protection of hazardous-area switches, solenoid drivers, and IIB-certified 2-wire transmitters. As part of the MTL7700 Series, it offers a compact DIN-rail mounting design suitable for oil & gas, petrochemical, and industrial automation systems where safe isolation and high signal integrity are required.
Engineered for demanding field applications, the MTL7707P+ supports 10–35V DC unregulated supplies and delivers stable performance even under harsh electrical conditions. Built-in electronic overvoltage protection ensures safe operation, minimizes wiring complexity, and maintains accurate signal transfer. Its removable terminals and compact form factor simplify maintenance and glove-friendly installation.
Key Features:
✅ ATEX/IECEx certified intrinsically safe barrier (IIB gases)
✅ Supports 10–35V DC operation with built-in electronic overvoltage protection
✅ IP20 enclosure, DIN-rail mount for fast installation
✅ High-integrity switching: dual shunt-diode channels
✅ Compatible with switches, controller outputs, and 2-wire transmitters
✅ Low voltage drop for stable field-device operation
✅ Enhanced safety with fuse protection and current limiting
✅ Removable terminals for easy servicing
📦 Package Options:
🔹 WiFi-only: Not applicable for this product
🔹 WiFi-only + SD Card 512GB: Not applicable for this product
🔹 WWAN (5G) + WiFi: Not applicable for this product
🔹 WWAN (Canadian versions): Not applicable for this product
MTL7707P+ Technical Specifications:
| Feature | Details |
|---|---|
| Model | MTL7707P+ |
| Series | MTL7700 DIN-Rail IS Barriers |
| Safety Description | 28V 164Ω 171mA (1–3), 28V Diode (4–2) |
| Channels | 2-channel shunt-diode barrier |
| Polarity | Positive polarity |
| Supply Voltage | 10–35V DC |
| Output Current | Up to 35mA available |
| Voltage Drop (1–3) | Iout × 218Ω + 0.3V |
| Voltage Drop (4–2) | Iout × 20.1Ω + 0.9V |
| Fuse Protection | 50mA electronic current limit |
| Temperature Range | –20°C to +60°C operating |
| IP Rating | IP20 |
| Terminals | Removable, 2.5mm² capacity |
| Mounting | Standard 35mm DIN rail |
| Applications | Switches, controller outputs, IIB transmitters |
Certifications & Compliance:
🔗 ATEX / IECEx Intrinsic Safety – Suitable for Zone 0/1/2, Group IIB applications
🔗 Safety Description: 28V 164Ω 171mA (Terminals 1–3), 28V diode (Terminals 4–2)
🔗 IP20 Rating – Protection against accidental contact
🔗 Temperature Range: –20°C to +60°C continuous operation
🔗 Download Datasheet
Applications of MTL7707P+:
🔹 Oil & Gas
🔹 Chemical Plants
🔹 Mining
🔹 Labs
🔹 Manufacturing
What’s in the Box?
📦 1x MTL7707P+ Barrier Module
📦 1x Removable Terminal Set
📦 1x Documentation Kit
Ordering & Shipping Details
📦 Lead Time: 6-8 weeks
📍 Shipping Terms: Worldwide / Expedited Options
💳 Payment Options: Credit Card, PayPal, Net 30 Terms
FAQs:
Is the MTL7707P+ suitable for 2-wire transmitters?
Yes. It is designed to support IIB gas-group 2-wire transmitters requiring intrinsic safety protection.
Does it support unregulated power supplies?
Yes. It operates safely from 10–35V DC and includes overvoltage protection.
Can the module be DIN-rail mounted?
Yes. It clamps directly onto standard 35mm DIN rail and provides automatic IS earth bonding.
How many channels does this barrier include?
Two channels: a 28V 164Ω 171mA shunt-diode channel and a diode-only channel. :contentReference[oaicite:4]{index=4}
