2 port communication module CTM-3K

data transmissionremotefor remote control

Product Overview
CTM-3K is an integrated current sensing unit with a KCU module installation interface for KUTAI control units. It supports single-phase and three-phase systems and displays load current. Compatible with standard CTs: primary 50–3000 A, secondary selectable 1 A or 5 A. The communication cable uses a keyed connector for plug-and-play installation and the unit automatically detects and displays connection status without additional setup. It provides two KCU module slots for simultaneous remote communication connections to build a stable remote monitoring system.

Features

• Integrated current sensing and KCU communication interface to reduce panel space and wiring
• Load current display for single- and three-phase power systems
• CT primary range 50–3000 A; CT secondary selectable 1 A or 5 A
• No-load zero current calibration button
• Automatic connection detection and status display after installation
• Supports installation of up to two KCU modules for remote communication
• Keyed connector design to prevent reverse connection
• LED indicators for power and connection status (steady Green: DC power ON; steady Red: controller connection interrupted; flashing Green: normal operation CT secondary 1 A; flashing Red: normal operation CT secondary 5 A)

Specifications

• Power input: 9–36 Vdc
• Current display accuracy: 50–3000 A ±1.5%
• Static power dissipation: < 1 W @ 12 Vdc
• CT rated burden: > 5 VA

Physical Specifications

• Dimensions: 162.0 × 112.0 × 41.2 mm (6.38 × 4.41 × 1.62 in)
• Weight: 329 g ±2% (0.73 lb ±2%)

Environment

• Operating temperature: -20 to +60 °C
• Storage temperature: -30 to +80 °C
• Relative humidity: ≤95%

Accessories

• Standard: HU-050-KCU-09 (500 mm harness) ×1
• Optional: HU-100-KCU-09 (1000 mm harness)

Technical characteristics

• Model: CTM-3K
• Brand: KUTAI
• Power input: 9–36 Vdc
• Current display range: 50–3000 A ±1.5%
• CT secondary selectable: 1 A or 5 A
• Static power dissipation: < 1 W @ 12 Vdc
• CT rated burden: > 5 VA
• Dimensions: 162.0 × 112.0 × 41.2 mm
• Weight: 329 g ±2%
• Operating temperature: -20 to +60 °C
• Storage temperature: -30 to +80 °C
• Relative humidity: ≤95%