What Is a Trip Amplifier?

Why Amelec Trip Amplifiers Stand Out

SIL‑Certified Safety Ratings

Amelec offers trip amplifiers certified to SIL 1, SIL 2, and SIL 3 (IEC 61508‑2), ensuring dependable integration into Safety Instrumented Systems (SIS) in hazardous or regulated environments.Amelec Instruments+8Amelec Instruments+8Amelec Instruments+8

Wide Versatility & Input Types

Supported inputs include thermocouple, RTD, mV, AC current/voltage, frequency, slidewire, strain gauge and process signals—making them ideal for nearly any application. Amelec Instruments+14Amelec Instruments+14Amelec Instruments+14

Configurable Trip Logic & Form Factors

Models range from single to dual or multiple-trips, adjustable deadbands, remote reset, latched relays, bi‑colour LEDs, and optional display or RFI protection. They are housed in rugged polycarbonate enclosures and mountable on DIN‑rail or surface. Amelec Instruments+5Amelec Instruments+5Amelec Instruments+5

High Precision & Fast Response

Typical trip setting accuracy is ±1 % with repeatability ±0.1 %, and response times under 100 ms—critical for timely safety actions. Amelec Instruments+14Amelec Instruments+14Amelec Instruments+14

Universal Supply & Modular Integration

Some models (e.g., AEC132) feature universal 21–265 V AC/DC supply, simplifying global deployment. The modular ADT series supports various process inputs, fully isolated input/output/supply, and is DIN‑rail compatible. Amelec Instruments+12Amelec Instruments+12Amelec Instruments+12


Highlighted Models

AEC132 – 4‑20 mA Input Dual‑Output Trip Amplifier

  • Dual independent trip relays configurable for high or low trips via DIP switches

  • Factory default 4‑20 mA input; other ranges available

  • Adjustable trip and hysteresis via 15‑turn potentiometers

  • Universal AC/DC power (21 – 265 V) and compact DIN‑rail enclosure (22.5 mm width)

  • Response <100 ms, trip settability ±1 %.Amelec InstrumentsAmelec Instruments+4Amelec Instruments+4Amelec Instruments+4

ADT131 – Process Input Single‑Set‑Point Trip Amplifier

ADT132 – Process Input Dual‑Output Trip Amplifier

ADT151 – AC Current Input Single Output Trip Amplifier

ADT121 – RTD Input Trip Amplifier

AST111 – Thermocouple Input Trip Amplifier

ATA170 Series – Strain Gauge Input Trip Amplifier


Highlights

  • Analogue-to-digital protection: Converts continuous inputs into reliable relay control for safety systems.

  • SIL-rated reliability: Certified to SIL 1, SIL 2 and SIL 3 standards—ideal for industrial safety loops.

  • Multi‑input flexibility: Support for RTD, thermocouple, mV, frequency, slidewire, AC inputs, etc.

  • Precise control: ±1 % trip setting, ±0.1 % repeatability, fast <100 ms response times.

  • Configurable outputs: Single or dual trip, latched or standard relays, adjustable deadband, LEDs.

  • Universal power & isolated design: Galvanic isolation across input, outputs and supply; some models support universal AC/DC voltage.

  • DIN‑Rail & surface mountable: Compact, rugged enclosures optimized for cabinet or panel layouts.


Summary

Discover Amelec’s Trip Amplifier portfolio—SIL‑certified, high‑precision devices that turn analogue sensor signals into robust protective relay actions. With support for thermocouple, RTD, mV, AC, frequency, strain gauge and process inputs, and configurable single/dual-trip outputs, these DIN‑rail mountable amplifiers deliver fast (≤100 ms), accurate (<±1 %) protection for industrial safety loops.

Whether you require dual output trip logic, thermocouple or RTD sensor protection, or SIL‑certified reliability, Amelec’s trip amplifiers—like the AEC132, ADT131/132, ADT151, ADT121, or AST111—offer unmatched flexibility and performance.

Ask now for datasheets, custom configurations, or pricing options targeting keywords like “SIL trip amplifier UK”, “4‑20 mA trip amplifier DIN‑rail”, or “thermocouple trip relay industrial safety.”

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