The MTT MS3700DV is a slim plug-in voltage divider that scales down a high DC voltage – from a battery bank, power supply, or DC distribution bus – into a smaller, proportional signal that standard instrumentation can read. Standard division ratio is 1/600, with custom ratios from 1/300 to 1/1000 available, and allowable input is ±600V DC continuous (expandable to 1200V DC max with the /Z option).
Input resistance is approximately 1.2MΩ, output resistance approximately 2kΩ, and output signal is simply the input voltage multiplied by the division ratio. Accuracy is better than ±0.2% of span at standard temperature, with temperature coefficient better than ±0.05% of span per 10°C change – stable enough for continuous monitoring duty.
Insulation resistance is 100MΩ minimum at 500V DC, with dielectric strength of 2100V AC for one minute. The unit mounts on wall or DIN rail via a plug-in socket base, with M3.5 screw terminals that have finger-safe protection – useful when working on a live high-voltage DC bus. Main unit weighs up to 70g and the socket up to 60g, with overall dimensions of 29mm × 86mm × 125mm. It is rated for -5 to 55°C ambient operation (-10 to 60°C storage) and 5-90% RH non-condensing.
| Division Ratio | Standard 1/600; custom ratios from 1/300 to 1/1000 available |
| Allowable Input Voltage | ±600V DC continuous (expandable to 1200V DC max with /Z option) |
| Input Resistance | Approximately 1.2MΩ |
| Output Resistance | Approximately 2kΩ |
| Output Signal | Input voltage × division ratio |
| Accuracy | Better than ±0.2% of span at standard temperature |
| Temperature Coefficient | Better than ±0.05% of span per 10°C change |
| Insulation Resistance | 100MΩ minimum at 500V DC |
| Dielectric Strength | 2100V AC for one minute |
| Dimensions (W x H x D) | 29mm x 86mm x 125mm |
| Weight | Main unit up to 70g; socket up to 60g |
| Mounting | Wall or DIN rail mounting, plug-in socket base |
| Terminals | M3.5 screw terminals with finger-safe protection |
| Operating Temperature | -5 to 55°C ambient (storage: -10 to 60°C) |
| Operating Humidity | 5-90% RH, non-condensing |
Frequently Asked Questions
What is the MS3700DV used for?
It scales down a high DC voltage — from a battery bank, power supply, or DC distribution bus — into a proportional, low-level signal that standard instrumentation can read safely.
Can I get a custom division ratio instead of the standard 1/600?
Yes. Custom ratios from 1/300 to 1/1000 are available to match your specific voltage range and receiving instrument. Let us know your actual voltage range when you enquire.
What’s the difference between a slim plug-in module like the MS3700DV and a terminal block type conditioner?
The MS3700DV mounts on its own plug-in socket base on DIN rail, so the module itself can be unplugged and swapped for maintenance or calibration without touching the field wiring. A terminal block type unit has the wiring terminals built into the same housing as the electronics.
Does the MS3700DV need a separate power supply?
No. It’s a passive voltage divider, so it doesn’t need external power to operate.
Download MTT MS3700DV Slim Plug-In Voltage Divider information here
Datasheet: MTT_SpecSheet_MS3700DV_Rev140_E
Manual: MTT_Manual_MS3700DV_Rev130_E
