The bi-directional DC contactors of the C360 series switch high powers in a small space. With a making capacity of up to 2,500 amps, the compact switchgear is suitable for applications with high inrush current or high capacities.
All versions can continuously conduct up to 500 amps. In the event of a short circuit, 3,000 amps, can even flow for one second without the contacts welding. The contactor therefore maintains its full function in order to disconnect high power ranges if necessary up to 500 amps and up to 1,500 volts – irrespective of the current direction. The full bidirectionality is important for many applications in railway vehicles. Many design variants are also available, matched to a wide range of applications, e.g. as the main contactor in traction and auxiliary converters of battery and hybrid vehicles or as an isolating contactor in battery circuits with high currents.
Small dimensions – big performance! Nevertheless, all the air gaps in the contact area have been generously dimensioned. The rated insulation voltage is 1,500 volts. The arc chamber of the C360 is made of plastic. This is efficient and saves weight.
The C360 can switch on a current of up to 2,500 A (monostable design in a horizontal installation position; L/R = 0 ms).
A PWM controller regulates the coil current and ensures low-bounce switch-on as well as a low and constant holding power. High contact forces and solid silver contacts benefit the making capacity.All versions of the C360 can continuously carry up to 500 A. (Cross-section of the connections: 185 mm2, maximum ambient temperature: 85°C; terminal heating: +65 kelvin). The value is reached through very high contact forces.
The C360 can carry a current of up to 3,000 A for one second without the contacts welding. This is enough time for the short circuit fuse to trip. The short-time withstand current rating is based on high contact forces and optimised silver contacts.
All versions of the C360 can reliably disconnect high currents and voltages, irrespective of the current direction.
These properties are achieved in the A and K versions through the special arrangement of blowout magnets and arcing chambers, high contact forces and generously dimensioned clearances in the contact aera.
Series C360 contactors are equipped with auxiliary contacts with mirror contact function. The mirror contact function complies with the standard DIN EN 60947-4-1 Annex F.
The mirror contact function means that the NC contact of the auxiliary contact must not be closed at the same time as the NO main contact.
Type of voltage | DC bidirectional, AC (f ≤ 60 Hz) |
Main contacts, configuration | 1 NO |
Rated operating voltage Ue | C360K: 1,000 V @ PD3 / 1,500 V @ PD2
C360A: 1,000 V @ PD3 / 1,500 V @ PD2 C360S: 60 V @ PD3 |
Rated insulation voltage Ui | 1,000 V @ PD3 1,500 V @ PD2 |
Pollution degreeOvervoltage category | PD2 or PD3, see Ue and Ui OV3 |
Rated impulse withstand voltage Uimp | 10 kV |
Conv. thermal current Ith | 500A @ 40° C 300 A @ 70° C 150 A @ 70° C |
Breaking capacity | 150 A @ Ie (L/R = 1 ms) DC, Ue= 900 V 420 A @ Ie (cosφ = 0.8) AC, Ue= 900 V |
Auxiliary switches | 2x SPDT max. with mirror contact function, single-break Snap-action switches S880: AC-15: 230 VAC/1.0 A; DC-13: 60 VDC/0.5 A |
Coil voltage Us | Standard: 12...24 V DC (operating range 9.5...36 V DC) / 48 V DC (operating range 33.6...60 V DC) Bistable: 24 / 48 V DC |
Mounting orientation | horizontal, vertical (do not mount upside down) |
Temperature range | -40° C ... +85° C |
Mechanical endurance | 2 million op. cycles (std. magnetic drive) 100,000 op. cycles (latch magnetic drive) (Replace auxiliary switch after 1,000,000 switching cycles) |