LIGHTN-SURGE PROT t. 2+3 (ABB 2CTB803972R1300) 2P/20kA,mod
Valid Article
OC subscriptions: included in supply or field order tools (e.g. UniField)
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SC subscriptions: included in supply or field tools
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OC validations: approved for procurement and use by an OC for international or local orders specifying context and activity in Medical Standard Lists (MSL)
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LIGHTN-SURGE PROT t. 2+3 (ABB 2CTB803972R1300) 2P/20kA,mod
Form
This SPD provides combined Type 2 + Type 3 protection for 230 V AC installations, using MOV technology for protection against indirect lightning surges while maintaining a low residual voltage compatible with sensitive electronic equipment. It features a pluggable module, thermal disconnector, and end-of-life indication.
nominal voltage: 230 V AC
maximum continuous operating voltage (Uc): 275 V AC
voltage protection level (Up): 0.9 kV (L–PE)
short-circuit withstand (ISCCR): 40 kA
nominal discharge current (In): 5 kA (8/20 µs)
SPD type / class: type 2 + type 3 (IEC 61643-11)
Imax: 20 kA (8/20 µs)
number of poles: 2 (L / N-PE)
dimensions: 95 × 35.6 × 58 mm (H × W × D)
weight: 0.24 kg
Per piece.
Fit
installation location: main AC distribution board / sub-distribution
recommended back-up fuse / MCB: max. 125 A gG or curve B/C MCB
AC system compatibility: TT / TN systems (1-phase)
mounting type: DIN rail
IP protection: IP20
max wire size: 2.5…25 mm² (solid) / 2.5…16 mm² (stranded)
Function
The surge protective device (SPD) protects AC installations and sensitive loads from transient overvoltages caused by lightning or switching disturbances.
Using MOV technology and an integrated thermal disconnector, it limits surge energy to safe levels and provides coordinated Type 2 + Type 3 protection.
It protects in L-N, N-PE and L-PE modes and features a visual end-of-life indicator for maintenance.