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4-20mA & Current Loops Surge Protectors

High quality, High Performance current loops surge protector devices help prevent damage to 4-20mA Current Loop and other Low Speed Data Circuits. Often overlooked, these critical SPDs play an important role in system reliability.

APS LLC | High Quality | High Performance | Current Loop Surge Protectors

Typically found in industrial and commercial environments, 4-20mA and Low Speed Circuits are primarily used for sending and receiving signals for data collection.

These signal systems typically monitor or measure processes including:

  • Liquid or Gas Pressure
  • Production Line Speeds
  • Fluids Flow Rate
  • Temperature
  • Moisture
  • Weight
  • Volume

In most cases (90%+) these low speed signals are 4-20mA circuits. Many of these circuit types can be found in:

  • Aggregate Plants
  • Waste Water Treatment Plants
  • Parking Lots
  • Security Gate Systems
  • Security Door Systems

...as well as other low voltage application scenarios.

Like other data transmission circuits, these Low Speed Circuits are highly sensitive. Care should be taken to protect against damaging transient voltage that can occur from weather related incidents or facility related occurrences. Reduce or prevent system disrupts and equipment damage with the proper application of surge protective devices (SPDs).

However, it needs to be the Right SPD placed in the Right Location to deliver the Right Results.

4-20mA Low Speed Circuits: At Risk From Destructive Transients  

For entities depending on low speed sensors including; leak detectors, flow meters and transducers (among others), placing the right surge protective gear between the sensors and sensitive equipment is critical for maintaining consistent and reliable system operation.

A current loop surge protector at one or both ends of the low speed circuit is often the difference between continuous, accurate, available measurements or constant down time and parts replacement.

By protecting Low Speed Data circuits, equipment life may be extended, maintenance costs reduced and increased productivity results. Reduction or prevention from catastrophic event damage, such as nearby lightning strikes can be mitigated.

The Right 420mA & Current Loops Surge Protector

Current Loop Surge ProtectorCurrent Loops SPD

High Quality, High Performance Low Speed Data Circuit designs deliver advanced current loops surge protectors.

SPDs are a multi-stage, hybrid-design and are series wired. Devices provide true Discrete All-Mode Protection and include Optimal Response Circuitry™ design.

All suppression circuits are encapsulated with patented, ElectroChemical Technology. This technology is a high dielectric compound that gives our SPDs an advantage over competing devices.

4-20mA Surge Protectors4-20mA SPD

Encapsulation Technology delivers:

  • Increased Component Life
  • Increased Heat Dissipation
  • Increased Circuit Integrity against Vibration
  • Increased Circuit Integrity against Weather Elements

This combination of design techniques provides protected equipment with some of the lowest let-through voltages of any 4-20 mA or low speed data surge protector on the market. Operating voltages range from 5 to 140 Volts with maximum data rates up to 2Mbps.

SPDs are High Quality and High Performance. Devices backed with 10 Year or Industry Leading 25 Year "No Hassle" Warranty.

Our current loops surge protector gear protects 4-20mA and Low Speed Data Circuits with the best surge protection options available.

Our gear is... often imitated... but rarely duplicated...

The Surge Stops HereTM

Get the Right Gear!TM

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American SPDs. High Quality. High Performance.