ETU860 LSIG 4‑Pole 63A MCCB, M‑Class 55kA, Terminal – Siemens 3VA2

1 / 5

Product Specifications

Brand: Siemens
Part Number: 3VA2063‑5KQ46‑0AA0
Series: 3VA2
Type: Molded Case Circuit Breaker
Number of Poles: 4
Rated Current In: 63 A
Breaking Capacity @415 V: 55 kA (Class M)
Protection: ETU860 LSIG

Product Description

The 3VA2063‑5KQ46‑0AA0 sits at the top of the 3VA2 line‑up, pairing the flagship ETU860 trip unit with a 4‑pole M‑class frame. It is built for installations that demand full LSIG coordination, adjustable neutral protection and integrated communication – all while keeping a manageable 55 kA breaking footprint.

What the ETU860 delivers

Overload (L): Ir = 25…63 A, I²t curve, 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; switchable.
Neutral (N): Adjustable OFF, 40%…160% × In.

Why ETU860 over ETU560?

ETU860 provides finer granularity in short‑time and ground‑fault settings, a wider L‑delay range (up to 25 s), and enhanced communication capabilities with integrated measurement. It is the go‑to choice when you need comprehensive system data alongside protection.

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	‑25 ℃ to 70 ℃ (full 63 A rating 40‑70 ℃)
Communication	Yes – Modbus TCP, RTU, PROFINET, PROFIBUS (external modules)
Net Weight	3.2 kg
Standard	IEC/EN 60947‑2
Country of Origin	Czech Republic

Installation & Application

Fixed mount on 35 mm DIN rail; clamp terminal connection.
Suited for system protection in industrial main distribution boards, motor control centres, and infrastructure where 4‑pole LSIG coordination and remote monitoring are required.