We received an enquiry from a customer who needed to monitor a high DC voltage — a battery bank or DC distribution bus running well above what a standard meter or PLC input can read directly. You can’t just wire a 600V DC signal straight into a 10V analog input; something has to scale it down first, accurately and safely.
The MTT MS3700DV is a slim plug-in voltage divider built for exactly this. It scales a high DC voltage down to a proportional, low-level signal at a fixed division ratio, so the instrumentation downstream sees a safe, standard signal instead of the full bus voltage. This looks simple, but in actual application, the division ratio needs to match your voltage range and your receiving instrument’s input range, so it’s worth confirming before ordering.
Being part of the MS3700 slim plug-in range, the MS3700DV mounts on its own plug-in socket base, so it can be swapped out for maintenance or calibration without disturbing the field wiring at the base terminals. No power supply is needed — it’s a passive divider. Stable, temperature-compensated accuracy keeps the scaled-down reading dependable for monitoring and protection systems.
Before we quote, we would normally check: the actual DC voltage range you need to monitor, the input range of the receiving instrument, and whether the standard 1/600 division ratio suits your application or a custom ratio is needed. Send us these details and we can confirm the right configuration before you order. Hope this helps.
| 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
