AC Current Transformer (max 51x15mmbus-bar)
• Bus-bar type current transformer
• 0.5 class, currents from 50 to 800 A
• Integrated DIN-rail mounting holder
• Removable panel fixing clips
• Up to 6 Bus-bar isolated fixing screws
• Double screw terminals (up to 8-wire connections)
• Sealable terminal block covers
CTD-3X 800 5A XXX
Cable/Bus-bar type current transformer with DIN-rail/bus- bar and panel mounting facility.
From 50 to 800A (Refer to Range Table)
Rated primary currents from
50 A to 800 A.
Primary current Secondary current Option
Optional fixing kit: CTD-kit
Operating frequency45 to 65 Hz
Max. system voltage0.72 kV
Rated insulation level3 kV/1 min. @ 50 Hz
Insulation class E (max 75°C)
Short-time current rating
Ith Typical 100 In /1 s
Idyn 2.5 Ith
The short-time thermal
current Ith is anyway limited by the cable/bus-bar size
Extended current rating 120%
Security factor (FS)5 (Class: 0.5, 1 and 3)
StandardsAccording to EN60044-1
Housing ABS, self-extinguishing: UL 94 V-0
Mounting DIN-rail bus-bar
and panel mounting
Standard accessoriesTwo terminal block screws.
Two cable/bus-bar fixing screws.
Two plastic caps for cable/bus-bar fixing screws. Two panel mounting
Two sealable terminal block covers.
Optional accessories Extended fixing kit: CTD-kit
Two panel mounting
Six cable/bus-bar fixing screws.
Six plastic caps for cable/bus-bar fixing screws.
Special features1 A secondary current, Tropicalization
Working temperature-25°C to +60°C (-13°F to
140°F) (R.H. < 90% non condensing @ 40°C)
Storage temperature -30°C to +70°C (-22°F to
158°F) (R.H. < 90% non condensing @ 40°C)
ApprovalsCE, cUrus and CSA
Cable cross section area From 1.5 to 6 mm2
Min/Max screws tightening torque relevant to terminal block screws:
From 1 to 2 Nm
Max screws tightening torque relevant to the cable/bus-bar fixing screws:
Protection degree IP00
IP20 (with sealable terminal block covers + wire terminals)
Cable diameter Max. 41 mm
Horizontal Max. 51x15 40x20: 32x32 mm
Vertical Max. 40x20 mm
Weight From 550 to 700 g
Rated secondary current5 A or 1 A
Specifications are subject to change without noticeCTD-3X DS ENG 250315 1