Description

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This DC ammeter shunt resistor is designed for precise current measurement in DC power systems, battery monitoring, and industrial electrical equipment. It provides stable performance and high accuracy under continuous load conditions.A DC ammeter shunt converts electric current into a measurable 75 mV voltage drop for precise current monitoring.
This fixed-type 50A DC ammeter shunt is ideal for energy meters, power analyzers, and DC monitoring systems where stable and accurate current measurement is essential.
Because the DC ammeter shunt provides a consistent low-resistance path, it enables reliable current sensing under continuous operation.

Operating Conditions

• Operating temperature: -40°C to +120°C
• Designed for continuous DC current measurement
• Suitable for industrial and energy systems
• Resistant to vibration and thermal stress

Key Features

• High Accuracy (75mV output at 50A) – Suitable for precise current detection circuits.

• Fixed Type Design – Compact, easy to mount in energy metering systems.

• Pure Copper Busbar Construction – Ensures excellent conductivity and minimal heat rise.

• Stable Voltage Drop – Provides reliable readings under continuous operation.

• Custom Current Ratings – From 10A to 1000A, available upon request for industrial meters.

  Parameter	Specification	Remarks
  Rated Current	50A	Customizable
  Rated Voltage Drop	75mV	Standard for most meters
  Material	Pure Copper + Manganin Alloy	High stability
  Accuracy	±0.5% – ±0.25%	Depending on range
  Mounting Type	Fixed / Panel Mount	For industrial setups
  Operating Temperature	-40°C ~ +120°C	Stable in harsh environments

• DC ammeter shunt of Wiring diagram analysis

  

  1. If you need higher-current versions, check our high-current bolt-on shunt resistors here:
      https://ohmresistor.com/product/high-current-shunt-resistor/To understand how shunts convert current into voltage,
  2. you can refer to the classical explanation of Ohm’s Law here:
      https://www.electronics-tutorials.ws/dccircuits/dcp_2.html

  3. Precautions

     Do not touch the primary circuit conductors or the connection points of the shunt while in operation to avoid electric shock.
     Do not draw any signal or take samples from the secondary circuit.
     This shunt is designed for DC measurement circuits with a rated insulation barrier voltage of 275 V.
     When used together with a 75 mV current-limited moving-coil (magnetoelectric) ammeter, it effectively extends the ammeter’s current measurement range.

• Common Problems in Current Measurement

  • Inaccurate current readings in high load systems
  • Overheating in low-quality shunt resistors
  • Resistance drift affecting measurement accuracy
  • Limited durability in industrial environments

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  How This DC Shunt Resistor Solves Them

  • High precision resistance for accurate measurement
  • Excellent thermal stability under continuous current
  • Low temperature drift for consistent readings
  • Durable construction for industrial use

  Typical Applications

  • DC power supply current measurement
  • Battery management systems (BMS)
  • Industrial automation equipment
  • Inverters and power converters
  • Charging systems and energy monitoring
  • Widely used in industrial control and energy monitoring systems

• Need a Custom Shunt Resistor?

  • Custom current range available
  • Fast sample support
  • Engineering assistance for your system design

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