Description
MTL5011B Intrinsically Safe Interface Relay – Safe & Reliable Hazardous Area Control
Product Description
The MTL5011B is a high-performance interface relay designed to control safe-area loads from hazardous locations. It supports switches or NAMUR proximity detectors in Zone 0, IIC, T6 or Div. 1, Group A areas. Features include phase reversal, line fault detection (LFD), and a relay output for flexible alarm signaling. Ideal for oil & gas, chemical, and industrial safety applications.
Technical Data
| Brand | MTL |
| Model | 5011B [Full suffix: MTL5011B-customizable] |
| Input | 7-9V, 1kΩ ±10% (NAMUR sensor) |
| Thresholds | ≥2.1mA (ON), ≤1.2mA (OFF), hysteresis 200µA |
| LFD Settings | Open-circuit: <100µA (alarm ON), Short-circuit: <100Ω (alarm ON) |
| Relay Contact | SPDT, 250V AC/2A (cosφ >0.7), 40V DC/2A |
| Power Supply | 20-35V DC, max 40mA |
| Isolation | 250V AC/DC (supply/input/output) |
| Operating Temp | -20°C to +60°C |
| Certification | ATEX, IECEx (Zone 0/Div. 1), UL/cUL |
Installation Guide
Mount on DIN rail. Connect sensor to Terminals 1 (–) and 2 (+). Use 500Ω–1kΩ series resistor or 20kΩ–25kΩ parallel resistor for LFD with contact inputs. Ensure proper earthing via Terminal 3.
Compatibility
Works with all NAMUR proximity detectors and mechanical switches. Compatible with IIC/T4-T6 gas groups and Group A dust environments.
Packaging & Warranty
- 1x MTL5011B Unit
- 1x Quick Start Guide
- 12-month warranty against defects.
Shipping: FedEx, UPS, or DHL (express options available).
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