MTT MS3704-S Slim Plug-In High-Level Signal Conditioner
MTT-MS3700-Series-Dimension

MTT MS3704-S Slim Plug-In High-Level Signal Conditioner

SKU: MS3704-S Categories: , Tag:
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The MTT MS3704-S High-Level Signal Conditioner (Isolator) is designed to eliminate ground loops, reduce electrical noise, and provide reliable signal isolation in industrial instrumentation systems. Operating on an isolated 24V AC power supply, it converts DC current or voltage input signals into stable and isolated standard DC outputs for process control and monitoring applications.

Key Features

  • 24V AC Powered – Designed for operation with a 24V AC (50/60 Hz) power supply commonly used in industrial control panels.
  • 4-Way Galvanic Isolation – Provides electrical isolation between input, outputs, power supply, and ground to prevent ground loops and signal interference.
  • Slim 29 mm Housing – Compact plug-in design maximizes DIN rail space and simplifies module replacement.
  • Dual Isolated Outputs – Supports signal duplication without requiring external signal splitters.
  • Conformal Coated Electronics – Protected with HumiSeal® 1A27NS coating for enhanced resistance to humidity, condensation, and corrosive environments.
Technical Specifications
● POWER SECTION
Power Requirement24V AC ±15% (47 to 63Hz)
Power SensitivityBetter than ±0.1% of span.
Power Line Fuse160mA fuse is installed (standard).
Power Consumption
ConfigurationMaximum Consumption
Single Output2.0VA max.
Dual Output2.5VA max.
● INPUT SECTION
Input Resistance

Voltage Input (DC): With or without power: 1MΩ min.

Current Input (DC):

Input Range (DC)Shunt Resistance
4 to 20mA (std.)250Ω
2 to 10mA250Ω
1 to 5mA100Ω
0 to 20mA250Ω
10 to 50mA10Ω
Allowable Input LimitsVoltage Input Model: 30V DC max., continuous (Standard for a span up to 10V).
Current Input Model: 40mA DC max., continuous (Standard for 4 to 20mA).
Ranges Available
Parameter RangeCurrent SignalVoltage Signal
Input Range (DC)-100 to 100mA-300 to 300V
Input Span (DC)100µA to 200mA200mV to 600V
Input Bias-100 to 100%-100 to 100%
Note: For any input range including negative input signals, the input spans for current and voltage signals range from 200µA to 200mA and 400mV to 600V, respectively.
Input Spec. Ex. 1: For 3 to 8V input, the input span is 5V and the bias +60%.
Input Spec. Ex. 2: For -5 to 0V input, the input span is 5V and the bias -100%.
● OUTPUT SECTION
Maximum Output Load
Voltage Output (DC)1V span and up2mA max.
10mV10kΩ min.
100mV100kΩ min.
Current Output (DC)4-20mA single output750Ω max.
4-20mA dual outputOutput 1: 550Ω max.
Output 2: 350Ω max.
Zero AdjustmentApprox. ±5% of span (Adjustable by the front-accessible trimmer).
Span AdjustmentApprox. ±5% of span (Adjustable by the front-accessible trimmer).
Ranges Available
Item CategoryCurrent SignalVoltage Signal
Output Range (DC)0 to 20mA-10 to 10V
Output Span (DC)4 to 20mA10mV to 20V
Output Bias0 to 100%-100 to 100%
* For current output signals, the accuracy of any current output smaller than 0.1mA is not guaranteed.
Output Spec. Ex. 1: For 4 to 20mA output, the output span is 16mA and the bias +25%.
Output Spec. Ex. 2: For -1 to 4V output, the output span is 5V and the bias -20%.
● PERFORMANCE
Accuracy RatingBetter than ±0.1% of span (at 25°C ± 5°C).
Temperature EffectBetter than ±0.2% of span per 10°C change in ambient temperature.
Response Time85ms max. (0 to 90%) with a step input at 100%.
CMRR100dB min. (500V AC, 50/60Hz).
Isolation Matrix4-way isolation between input, output (Output 1/Output 2), power, and ground networks.
Insulation Resistance100MΩ min. (@ 500V DC) between input, output (Output 1/Output 2), power, and ground lines.
Dielectric StrengthInput / Output (Output 1/Output 2) / [Power, Ground]: 2000V AC for 1 minute (Cutoff current: 0.5mA)
Power / Ground: 2000V AC for 1 minute (Cutoff current: 5mA)
Output 1 / Output 2: 500V AC for 1 minute (Cutoff current: 0.5mA)
Surge CapabilityTested as per industrial ANSI/IEEE C37.90.1-1989 benchmark standards.
Operating EnvironmentAmbient temperature range: -5 to 55°C
Relative Humidity range: 5 to 90% RH (non-condensing)
Storage Temperature-10 to 60°C
● PHYSICAL
Installation TypeSurface Wall or structural DIN rail mounting configurations.
Wiring ConnectionM3.5 screw terminal connection assembly (integrated with a terminal block cover and drop-out prevention screw sets).
Screwing Torque0.8 to 1.0 [Nm] Recommended target rating.
External DimensionsW29 × H86 × D125 mm (inclusive of basic mounting block screw configurations and terminal socket dimensions).
Unit WeightMain Module: 120g max.
Base Socket Block: 80g max.
● MATERIALS
Housing ShellFlame-retardant ABS resin thermoplastic (UL 94V-0 compliant material status).
Terminal BlockPBT industrial resin blend (UL 94V-0 compliant protection profile).
Terminal Shield CoverPolycarbonate resin shield (UL 94V-2 flame resistance class).
DIN Rail StopperPolypropylene resin block assembly (UL 94HB safety rating).
Screw Terminal PostsRugged nickel-plated steel design.
Pin Contacts MaterialPremium brass core base carrying safe 0.2µm precision gold plating layers.
Internal PCB SubstrateGlass fabric composite epoxy resin matrix board (FR-4 standard specification; UL 94V-0 classification compliance).
Anti-Humidity CoatingHumiSeal® 1A27NS premium polyurethane insulation lacquer film protection layers.
* HumiSeal® is a registered trademark protection asset belonging entirely to Chase Corporation.
● STANDARDS CONFORMITY
Technical Specifications
● POWER SECTION
Power Requirement24V AC ±15% (47 to 63Hz)
Power SensitivityBetter than ±0.1% of span.
Power Line Fuse160mA fuse is installed (standard).
Power Consumption
ConfigurationMaximum Consumption
Single Output2.0VA max.
Dual Output2.5VA max.
● INPUT SECTION
Input Resistance

Voltage Input (DC): With or without power: 1MΩ min.

Current Input (DC):

Input Range (DC)Shunt Resistance
4 to 20mA (std.)250Ω
2 to 10mA250Ω
1 to 5mA100Ω
0 to 20mA250Ω
10 to 50mA10Ω
Allowable Input LimitsVoltage Input Model: 30V DC max., continuous (Standard for a span up to 10V).
Current Input Model: 40mA DC max., continuous (Standard for 4 to 20mA).
Ranges Available
Parameter RangeCurrent SignalVoltage Signal
Input Range (DC)-100 to 100mA-300 to 300V
Input Span (DC)100µA to 200mA200mV to 600V
Input Bias-100 to 100%-100 to 100%
Note: For any input range including negative input signals, the input spans for current and voltage signals range from 200µA to 200mA and 400mV to 600V, respectively.
Input Spec. Ex. 1: For 3 to 8V input, the input span is 5V and the bias +60%.
Input Spec. Ex. 2: For -5 to 0V input, the input span is 5V and the bias -100%.
● OUTPUT SECTION
Maximum Output Load
Voltage Output (DC)1V span and up2mA max.
10mV10kΩ min.
100mV100kΩ min.
Current Output (DC)4-20mA single output750Ω max.
4-20mA dual outputOutput 1: 550Ω max.
Output 2: 350Ω max.
Zero AdjustmentApprox. ±5% of span (Adjustable by the front-accessible trimmer).
Span AdjustmentApprox. ±5% of span (Adjustable by the front-accessible trimmer).
Ranges Available
Item CategoryCurrent SignalVoltage Signal
Output Range (DC)0 to 20mA-10 to 10V
Output Span (DC)4 to 20mA10mV to 20V
Output Bias0 to 100%-100 to 100%
* For current output signals, the accuracy of any current output smaller than 0.1mA is not guaranteed.
Output Spec. Ex. 1: For 4 to 20mA output, the output span is 16mA and the bias +25%.
Output Spec. Ex. 2: For -1 to 4V output, the output span is 5V and the bias -20%.
● PERFORMANCE
Accuracy RatingBetter than ±0.1% of span (at 25°C ± 5°C).
Temperature EffectBetter than ±0.2% of span per 10°C change in ambient temperature.
Response Time85ms max. (0 to 90%) with a step input at 100%.
CMRR100dB min. (500V AC, 50/60Hz).
Isolation Matrix4-way isolation between input, output (Output 1/Output 2), power, and ground networks.
Insulation Resistance100MΩ min. (@ 500V DC) between input, output (Output 1/Output 2), power, and ground lines.
Dielectric StrengthInput / Output (Output 1/Output 2) / [Power, Ground]: 2000V AC for 1 minute (Cutoff current: 0.5mA)
Power / Ground: 2000V AC for 1 minute (Cutoff current: 5mA)
Output 1 / Output 2: 500V AC for 1 minute (Cutoff current: 0.5mA)
Surge CapabilityTested as per industrial ANSI/IEEE C37.90.1-1989 benchmark standards.
Operating EnvironmentAmbient temperature range: -5 to 55°C
Relative Humidity range: 5 to 90% RH (non-condensing)
Storage Temperature-10 to 60°C
● PHYSICAL
Installation TypeSurface Wall or structural DIN rail mounting configurations.
Wiring ConnectionM3.5 screw terminal connection assembly (integrated with a terminal block cover and drop-out prevention screw sets).
Screwing Torque0.8 to 1.0 [Nm] Recommended target rating.
External DimensionsW29 × H86 × D125 mm (inclusive of basic mounting block screw configurations and terminal socket dimensions).
Unit WeightMain Module: 120g max.
Base Socket Block: 80g max.
● MATERIALS
Housing ShellFlame-retardant ABS resin thermoplastic (UL 94V-0 compliant material status).
Terminal BlockPBT industrial resin blend (UL 94V-0 compliant protection profile).
Terminal Shield CoverPolycarbonate resin shield (UL 94V-2 flame resistance class).
DIN Rail StopperPolypropylene resin block assembly (UL 94HB safety rating).
Screw Terminal PostsRugged nickel-plated steel design.
Pin Contacts MaterialPremium brass core base carrying safe 0.2µm precision gold plating layers.
Internal PCB SubstrateGlass fabric composite epoxy resin matrix board (FR-4 standard specification; UL 94V-0 classification compliance).
Anti-Humidity CoatingHumiSeal® 1A27NS premium polyurethane insulation lacquer film protection layers.
* HumiSeal® is a registered trademark protection asset belonging entirely to Chase Corporation.
● STANDARDS CONFORMITY

Download MTT MS3704-S Slim Plug-In High-Level Signal Conditioner information here

Datasheet: MTT_SpecSheet_MS3704-S_Rev11_E
Manual:

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