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Live-tank circuit breaker 3AP series

live-tank circuit breaker
live-tank circuit breaker
live-tank circuit breaker
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Electrical characteristics
high-voltage, single-pole, 4-pole, 2-pole
Number of poles
single-pole, 4-pole, 2-pole
Other characteristics
Primary current

2,500 A, 4,000 A, 5,000 A


Max.: 800 kV

Min.: 72.5 kV


We offer live tank circuit breakers for applications from 72.5 kV to 800 kV, up to 80 kA, suitable for all different types of applications, in extreme temperatures or earthquake regions. Depending on the requirement, you can choose from live tank circuit breakers with three-pole or single-pole operation, as well as from porcelain or composite insulators. Main features • Spring drive mechanism (3AP) or electrohydraulic operating mechanism (3AT) • Self-compression principle (≤ 245 kV) or dynamic self-compression principle (≥ 245 kV) • Available with single- (FI, FE) or three-pole operation • Suitable for temperatures from -60 up to +55°C • Available with porcelain or composite insulators • Seismic withstand capability up to 0.3 g or 0.5 g • Gas leakage rate of less than 0.1 % per year • Type tested according to the latest international standards Advantages • Easy installation and commissioning: only few subassemblies • Inspection after 12 and maintenance after 25 years • 10,000 switching operations are guaranteed • Service life of up to 50 years • Over 107,000 circuit breakers delivered worldwide prove our best practices and years of experience • Minimal transportation costs • 24-hour service hotline • Our global production network saves customers time and transportation costs
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.