MTL4521 | MTL Loop-Powered Safety Control Barrier
Manufacturer: Honeywell
-
Part Number: MTL4521
Condition：New with Original Package
Product Type: MTL Loop-Powered Safety Control Barrier
-
Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Description
The MTL4521 Loop-Powered Solenoid/Alarm Driver is a compact, intrinsically safe isolator engineered for process automation and safety systems. It transmits control signals from a safe area to operate certified devices—such as solenoid valves, alarms, or LED indicators—located within hazardous zones. Because it is loop-powered, the MTL4521 draws power directly from the control loop, reducing wiring complexity and eliminating external power supply needs.
This module delivers reliable performance in critical control environments like Distributed Control Systems (DCS), Emergency Shutdown Systems (ESD), and Fire & Gas (F&G) networks. Moreover, its three-port isolation and small form factor make it ideal for dense cabinet installations. Designed for hazardous area compliance, the MTL4521 meets ATEX, IECEx, FM, and CSA certifications and supports operation in Zone 0 classified areas.
Key Features & Benefits
-
Loop-Powered Efficiency: Operates without external power, simplifying system integration.
-
Intrinsic Safety Certified: Enables safe connection to field devices in Zone 0 hazardous locations.
-
Three-Port Isolation: Provides electrical separation between input, output, and power circuits for enhanced protection.
-
Compact and Robust: Space-efficient design ideal for high-density cabinet mounting.
-
Versatile Compatibility: Suitable for solenoids, alarms, LEDs, and valve positioners in industrial systems.
-
High Reliability: Engineered to perform under extreme process conditions from –20°C to +60°C.
Technical Specifications
| Specification | Details |
|---|---|
| Model Number | MTL4521 |
| Function | Loop-powered solenoid/alarm driver |
| Channels | 1-channel |
| Input Voltage | 20–35 V DC |
| Output Type | Drives certified IS loads (e.g., solenoids, LEDs) |
| Load Location | Zone 0, IIC, T4–T6 hazardous area (if suitably certified) |
| Power Supply | Loop-powered (no external power required) |
| Isolation | 3-port galvanic isolation (input/output/power) |
| Mounting Type | DIN rail |
| Operating Temperature | –20°C to +60°C |
| Dimensions (W × H × D) | 17.5 mm × 110 mm × 120 mm |
| Certifications | ATEX, IECEx, FM, CSA |
FAQ
Q1: What is the main function of the MTL4521?
It isolates and drives certified field devices such as solenoids or alarms in hazardous areas.
Q2: Does it require an external power supply?
No, the MTL4521 is loop-powered and draws power directly from the control circuit.
Q3: Can it be used in Zone 0 areas?
Yes, it is certified for Zone 0, IIC, T4–T6 hazardous environments when properly installed.
Q4: What type of isolation does the MTL4521 provide?
It features three-port galvanic isolation between input, output, and power.
Q5: Which certifications does the MTL4521 comply with?
It is approved under ATEX, IECEx, FM, and CSA standards for intrinsic safety.