Cable Wire Shunt Resistor
Products Description
The Cable Wire Shunt Resistor is an integrated, high-precision, low-resistance current-sensing component specifically designed for electromagnetic switching devices such as latching relays and contactors. At its core lies a functional element-fabricated by stamping a composite strip formed through the precision electron-beam or laser welding of a copper conductor and a manganese-copper alloy resistive strip. This component serves to proportionally convert large currents (typically ranging from tens to hundreds of amperes) into millivolt-level voltage signals without interrupting the main circuit, thereby enabling the real-time, precise monitoring, protection, and control of current flow; it stands as a critical sensing element for enhancing the intelligence and safety of relay systems.
Product Properties and Characteristics
| Electrical Characteristics | Extremely low DC resistance, precise nominal resistance values, extremely low temperature coefficient, excellent long-term stability, and high current-carrying capacity. |
| Thermal Characteristics | Manganin Shunt Resistor possesses low power consumption, low self-heating, excellent thermal conductivity and heat dissipation capabilities, and a wide operating temperature range. |
| Mechanical Characteristics | Compact structure, integral molding, high mechanical strength, and excellent resistance to vibration and shock for Electric Current Measure Manganin Shunt. |
| Frequency Characteristics | Extremely low parasitic inductance, suitable for DC and low-frequency AC measurements for Micro Ohm Manganin Welding Shunt Resistor. |
Material System
Conductive Terminals
Composed of high-conductivity oxygen-free copper for Magnetic Shunt Customized (C11000), these terminals serve to connect the cable with the external circuit and are responsible for handling high-current transmission.
01
Shunt Core
The central core layer utilizes a manganese-copper alloy (Manganin / CuMnNi alloy), which possesses an extremely low temperature coefficient of resistance, thereby ensuring that the resistance value remains constant even in high-temperature environments.
02
Welding Process
The two material layers are metallurgically bonded through Electron Beam Laser Welding; the resulting weld seam exhibits strength equivalent to that of the base materials, thereby completely eliminating the risk of interfacial delamination for Bar Shape Shunt Resistor.
03
Forming Process
Following the welding stage, the composite strip undergoes a multi-station precision stamping process to achieve the final shunt geometry, featuring smooth, burr-free edges of Manganin Shunt Resistor.
04
Application Scenarios
Latching Relays: Core application scenarios involving current sampling and protection for smart electricity meters, automatic reclosers, and load switches.
Smart Grid Equipment: Current monitoring for distribution terminals, fault indicators, and smart switchgear.
New Energy Storage: Sampling of charging and discharging currents for energy storage converters and Battery Management Systems (BMS).
Industrial Control: Overload protection and current feedback for PLCs, variable frequency drives (VFDs), and servo systems.
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Are you looking for a high-precision, highly reliable current-sensing solution for your smart appliances? Our Cable Wire Shunt Resistors are the ideal choice. Submit your current and precision requirements to receive a customized solution and samples.
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