Telergon C2-02503NTDDT automatic transfer switch 3P+N 250A

The Telergon C2-02503NTDDT is a 250 A 3P+N automatic transfer switch from the C2 Series, providing automatic and programmable transfer between two supplies such as a mains feed and a standby generator. It is a size 1 unit classified PC class AC-33B to IEC 60947-6-1.

Technical specifications:

• Commercial reference: C2-02503NTDDT
• Manufacturer: Telergon
• Series / range: C2 Series automatic transfer switch
• Product type: Automatic transfer switch (ATS), automatic and programmable transfer
• Number of poles: 3P+N
• Frame size: 1
• Rated thermal current [Ith]: 250 A
• Rated operational current [Ie] at 415 V (AC-31B, AC-32B, AC-33B): 250 A
• Rated insulation voltage [Ui]: 690 V
• Rated impulse withstand voltage [Uimp]: 8 kV
• Rated short-circuit making capacity [Icm]: 30 kA peak
• Rated short-time withstand current [Icw] 0.2 s: 10 kA
• Rated conditional short-circuit current [Icc]: 120 kA
• Rated control voltage: 230 V / 50 Hz
• Operating transfer time: 2.1 s
• Contact transfer time: 1 s
• ATSE class: PC class AC-33B
• Operation cycles: 6,000
• Terminal tightening torque: M8, 6 Nm
• Connection capacity, Cu cable: 120 mm²
• Maximum weight: 9 kg
• Connection capacity, Cu bar: 5x25 mm
• Standards: IEC 60947-6-1

Features and benefits:

• Automatic transfer and automatic recovery between sources I and II
• LCD display included for status and programming
• RS-485 port with bidirectional transmission for remote communication
• Engine exerciser for scheduled generator test runs
• Three-phase monitoring with voltage and frequency protection
• Generator start / stop control and fire-linkage (passive) input
• Source priority setting and DC 24 V auxiliary power input

Applications:

• Mains / generator changeover in commercial and industrial buildings
• Standby supply for data centres, hospitals and other critical loads
• Dual-feed distribution boards requiring automatic source selection
• Generator sets needing automatic start and load transfer

Compliant with IEC 60947-6-1. Part of the Telergon C2 Series.

Also known as: Telergon C2-02503NTDDT, C2 ATS 3P+N 250 A.