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THREE-PHASE HV VACUUM
CONTACTORS & CIRCUIT BREAKERS
HD3
& HK3 Series
The HD3 series mounts upright; the HK3 series has the
low profile form. These extra heavy duty, stored energy closing,
vacuum circuit breakers are ideal devices for quiet, high speed
ground fault or line fault protection with minimum maintenance for
mine equipment control, portable equipment control, or other load
control. Using energy storage close & trip requiring only 8 amps
at 115V 50/60Hz. Their trip and interrupt time are 1/2 to 1 1/2
cycle.
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HK3 Low Profile
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Both series are designed for a minimum of 50,000
mechanical operations and for extremely heavy repetitive duty within
their interrupt or momentary ratings. Units in these series are
designed for 5 to 38KV, 600, 900, 1,200 and 1,600 amp continuous
rating, and 35MVA to 1,850MVA, 4,000 to 28,000 amp maximum symmetric
interrupt capability. Higher voltages are also available.
The high performance stored energy mechanism
insures positive close and latch combined with high speed trip.
These units may be mounted in any attitude in air, oil (some
models), or insulating gas. Three form C SPDT, 15 amp, 480V AC
auxiliary contacts are standard for these models and up to five are
optional; 10 amp, 125V DC auxiliaries are also available.
Single-pole and two-pole units are
also available as well as units, for voltages up to 300KV.
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