Product Description

The 3VA2063-5KQ42-0AA0 is the 4-pole variant of the flagship ETU860 family in the SENTRON 3VA2 lineup. It delivers full LSIG protection with adjustable N-conductor protection, communication and measurement built in — and rather than clamp terminals, it uses a screw-flat nut keeper kit for direct, vibration-proof busbar connections. For switchgear builders who prefer bolted links to cage clamps, this is the right choice.

Protection Functions

Overload (L): Ir = 25…63 A, I²t characteristic, delay tr = 0.5…25 s.
Short-time (S): Isd = 0.6…10 × In (38…630 A), tsd = 0.05…0.5 s.
Instantaneous (I): Ii = 1.5…12 × In (95…756 A).
Ground-Fault (G): Ig = 0.25…1 × In, tg = 0.05…0.8 s. Detected via residual current summation across L+N conductors; switchable.
Neutral (N): Adjustable OFF to 160% of In.
Communication & Measurement: Integrated — supports Modbus TCP, Modbus RTU, PROFINET, PROFIBUS via external modules.

Technical Specifications

Parameter	Value
Rated Insulation Voltage Ui	800 V AC
Rated Operational Voltage Ue	690 V AC
Breaking Capacity Icu @415 V	55 kA (Class M)
Service Breaking Capacity Ics @415 V	55 kA
Making Capacity Icm @415 V	121 kA
Mechanical / Electrical Life	25 000 / 15 000 ops @415 V (10 500 ops @690 V)
Power Loss	1.8 W/pole (hot state), 5.4 W total max
Degree of Protection	IP40 (front face)
Ambient Temperature	40 °C to 70 °C (full 63 A rating)
Terminal Type	Nut keeper kit (screw-flat connection)
Net Weight	2.79 kg
Standard	IEC/EN 60947-2
Country of Origin	Czech Republic

Installation & Application

Fixed mount on 35 mm DIN rail; nut keeper kit for direct busbar or heavy-lug termination.
Typical applications: 4-pole system protection in industrial main distribution boards and motor control centres where LSIG coordination, N-conductor switching and remote monitoring are needed.