Dual-Channel Safety Barrier MTL4787 – Hazardous Area Protection | Buy Now

MTL4787+ Dual-Channel Barrier: Advanced Hazardous Area Protection with Schottky Diode Technology

Essential Functionality

Control two hazardous-area devices safely with this twin-channel barrier. Features Schottky diode return technology for reliable signal transmission. Perfect for 4-20mA transmitters and solenoid valves.

Key Advantages

• Twin 2-channel design
• Schottky diode return path
• Bussed power compatibility
• Equivalent to two MTL787S barriers
• Zone 0 hazardous area certified

Technical Specifications

Brand: MTL Instruments
Model: 4787+ (Full suffix: MTL4787+-XXX)
Channels: 4 (1-3, 2-4 pairs)
Safety Rating: 28V, 93mA
Max Resistance: 330Ω (Ch1/3), 0.9V+22Ω (Ch2/4)
Voltage Range: 26.3V working, 27.0V max
Fuse Protection: 50mA per channel
Power Handling: 0.65W matched
Cable Parameters: 0.13µF capacitance, 4.2mH inductance

Installation Notes

• Use with return-side control systems
• Connect bussed power if available
• Pair channels for complete loops
• Ensure proper grounding

Compatible Devices

• 4-20mA transmitters
• Smart instruments
• Solenoid valves
• Alarm systems
• LED indicators

Safety Certifications

• ATEX/IECEx: Group IIC
• FM: Groups A & B
• Safety Parameters: U_o=28V, I_o=93mA

Package Contents

• MTL4787+ barrier unit
• Installation guide
• Safety compliance documents
• Terminal layout diagram

Warranty & Shipping

12-month product warranty. Ships globally via FedEx, UPS or DHL.

Technical FAQs

Q1: How many devices can one MTL4787+ control?
A: It drives two hazardous-area devices using four channels.

Q2: What’s the difference between MTL4787+ and MTL4787P+?
A: MTL4787P+ offers higher power handling capacity.

Q3: Does this barrier support HART communication?
A: Yes, compatible with smart/HART transmitters.

Q4: Can I use this with 24V solenoid valves?
A: Yes, handles loads up to 28V safely.

Q5: What is Schottky diode technology advantage?
A: Provides efficient return path without earth connection.