Eaton / MTL4000 Backplane Isolators
Eaton MTL4015 Switch and Proximity Detector Interface
Single-channel NAMUR switch and proximity-detector interface with line-fault detection and dual relay outputs.
Product Overview
Hazardous-area switch input with repeat relay contacts
Eaton MTL4015 interfaces a hazardous-area switch or NAMUR proximity detector to two safe-area relay outputs. It includes line-fault detection, phase reversal and LED indication.
The model is discontinued. Eaton identifies MTL4511 as the standard replacement; when a repeat-contact arrangement is required, the official cross-reference directs users to MTL4510B with a terminal 7 and 9 check.
Generated industrial installation illustration for the MTL4015 interface function.
Product Specifications
Official identification and technical data
| Brand | Eaton |
|---|---|
| Model | MTL4015 |
| Channels | 1 |
| Input devices | Switch or NAMUR proximity detector |
| Sensor supply | 7-9 Vdc |
| Outputs | 2 relay contacts |
| Relay response | 2 ms maximum |
| Contact rating | 10 W, 0.5 A, 35 Vdc |
| Line-fault detection | Included |
| Phase reversal | Included |
| Power supply | 20-35 Vdc |
| Current consumption | 50 mA at 24 V |
| Power consumption | 1.2 W at 24 V |
| Isolation | 250 Vac |
| Indicators | Power, output and line-fault LEDs |
Operating Functions
NAMUR input monitoring and relay duplication
Switch/NAMUR input
The channel accepts a mechanical switch or NAMUR proximity detector.
Dual relay outputs
Two safe-area relay contacts repeat the input state.
Line-fault detection
Open- and short-circuit monitoring supports field-loop diagnostics.
Phase reversal
The logic sense can be reversed for the application.
FAQ
Eaton MTL4015 technical questions
Which field devices can MTL4015 interface?
A switch or NAMUR proximity detector.
How many relay outputs are provided?
Two.
Does MTL4015 include line-fault detection?
Yes.
Is MTL4015 discontinued?
Yes. Eaton lists it as discontinued.
What replacement does Eaton identify?
MTL4511 is the standard replacement; MTL4510B is referenced when a repeat contact is required.
Replacement Information
MTL4511 standard replacement and repeat-contact case
Standard cross-reference
Eaton identifies MTL4511 as the replacement for MTL4015.
Repeat-contact requirement
Eaton directs repeat-contact applications to MTL4510B with terminals 7 and 9 checked.
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