TERASAKI AMT-1C-B AME series frame circuit breaker

Product Description

TERASAKI AMT-1C-B is a microprocessor overcurrent trip relay (OCR) for AME series Air Circuit Breaker (ACB). It serves as the intelligent protection unit for marine & industrial draw-out air circuit breakers. It provides 3-stage protection: long time delay, short time delay and instantaneous overcurrent protection. It can monitor 3-phase current, store trip records and fault events. It is equipped with local display and setting keypad for on-site protection parameter configuration, and ground fault protection is optional. With marine classification certification, it is vibration and humidity resistant, designed for marine power distribution and industrial low-voltage main switchboard systems. This model is discontinued and mainly supplied as spare parts for legacy AME breakers.

Product Parameters

• Series: AME Air Circuit Breaker intelligent trip unit
• Model: AMT-1C-B
• Device Type: Microprocessor Overcurrent Trip Relay (OCR)
• Compatible Breaker: AME series air circuit breaker
• Protection Functions: Long time delay (LTD) overload, short time delay (STD) short-circuit, instantaneous (INST) short-circuit, optional ground fault GF protection
• Measurement: 3-phase RMS current sampling
• Setting: Local keypad to configure current & time delay
• Data Logging: Fault trip log, event memory
• Power Supply: Self-powered by CT, no external auxiliary supply required
• Indication: Status LED and fault indication
• Environmental Performance: Anti-vibration, humidity resistance for marine service
• Certifications: Major marine classification societies (LR, DNV, NK etc.), IEC
• Mounting: Installed directly onto AME ACB body
• Operating Temperature: -20℃ ~ +60℃
• Lifecycle: Discontinued, new surplus & refurbished spare parts available

Product Application

It acts as the core protection controller for Terasaki AME air circuit breakers, widely used in marine main switchboards, offshore platforms, power plants and petrochemical low voltage distribution systems. It continuously monitors main circuit current and sends trip signal to open ACB during overload, short-circuit or earth fault to safeguard busbars, cables and generators. Fault history can be retrieved for root cause analysis. Commonly used for marine electrical maintenance, legacy low voltage switchgear retrofit and replacement of ACB protection trip units.

Same Series Models (AME trip units)

AMT-1A-B, AMT-1B-B, AMT-1C-B, AMT-1D-B