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Protection and safety
OVR Type T2-T3 QuickSafe® surge protective devices
TT - 230 V and 400 V 3Ph+N networks

Technical features
Types OVR T2-T3 3N 20-275 P QS OVR T2-T3 3N 20-440 P QS
with auxiliary contact (TS) OVR T2-T3 3N 20-275 P TS QS 5
Dimensions
height x width x depth mm 88 x 71.2 x 65.3 88 x 71.2 x 65.3
inches 3.46 x 2.8 x 2.57 3.46 x 2.8 x 2.57
With Auxiliary Contact (TS)
height x width x depth mm 95.8 x 71.2 x 65.3 96 x 71.2 x 64.8
inches 3.77 x 2.8 x 2.57 3.35 x 2.81 x 2.55
Replacement Cartridges
Phase Product ID OVR T2-T3 20-275 C QS OVR T2-T3 20-440 C QS
2CTB803876R1200 2CTB803876R0600
Neutral Product ID OVR T2-T3 N 80-275 C QS OVR T2-T3 N 80-440 C QS
2CTB803876R0000 2CTB803886R0100

Type 2 and 3 surge protective devices shall be installed as close as possible to the sensitive
equipment to protect. As Type 2 they have been characterize by their capacity to safely
discharge current with a 8/20 µs wave form and they guarantee the coordination with Type 1
SPDs or other Type 2 respecting coordination distances. As Type 3 they are characterized by
their capacity to safely discharge current with 1.2/50 µs wave form, with a very low level of
Voltage Protection level.

OVR T2 T3 3N 20-275 P TS QS Po- Max Nomi- Volt- Nomi- Max. Bbn Order details Weight
les dis- nal dis- age nal cont. 3660308 1 piece
charge charge pro- voltage oper-
current current tec- Un ating
Imax In tion volt-
8/20 level age
Up Uc

kA kA kV V V EAN Type code Order code kg
3+1 20 5 1.4 230/400 275 519.924 OVR T2-T3 3N 20-275 2CTB803973R1200 0.48
P QS
3+1 20 5 1.4 230/400 275 520.692 OVR T2-T3 3N 20-275 2CTB803973R1600 0.48
P TS QS
3+1 20 5 1.5 400/690 440 519986 OVR T2-T3 3N 20-440 2CTB803973R1300 0.48
P QS