Ross Shorting Switch Relays & Deadman Kill Switches
Ross HV Shorting Relay
(KV) E12-DT-12-1-78A-ESC
Ross HV shorting relay. 230v @ 50 - 60 Hz coil. 78 amp. Double throw, 1 normally closed, 1 normally open. Auxillary position switch is SPDT. 2-1/2" x 2-3/4" x 6"H.
$475 each
High Voltage / High Current Shorting Relay
12 kv / 70 amp
(KV) RP603
RS Components high voltage / high current shorting relay. SPST, normally closed. 12 kv, 70 amp. 24v DC coil. Includes SPDT indicator contacts. 2-3/4" x 2-1/2" x 4-1/2"H. New, unused. Alt. P/N: 300346356.
$249 each
Ross Relay
12 kv
(KV) E12-NC-12-1-15-BD
Ross HV relay. 12 kv, 70 amp. Normally closed. 115v, 60 Hz coil. Single pole. 2-1/2" x 2-1/2" x 4-3/4"H.
*** SOLD OUT ***
Ross HV Shorting Relay
12 kv
(KV) E12-NO-12-0-0
Ross HV shorting relay. 12 kv, 70 amp. 115 vac, 60 Hz coil. Normally open single pole. Actuator 115v / 60 Hz. 2-1/2" x 2-1/2" x 4-3/4"H. Used.
$275 each
Ross HV Shorting Relay
12 kv
(KV) E12-NC-12-1
Ross HV shorting relay. 12 kv always open, 70 amp. Normally closed single pole. 115 vac, 60 Hz coil. Actuator 115v coil. 2-1/2" x 2-1/2" x 4-3/4"H. Used. Only one available.
*** SOLD OUT ***
Ross HV Shorting Relay
15 kv
(KV) E15-DT-15-1-0-BH
Ross HV shorting relay. 15 kv, 125 amp. Double throw. 1 normally closed, 1 normally open. Actuator 115v / 60 Hz. 3" x 3" x 7"H.
$525 each
Ross HV Shorting Relay
25 kv
(KV) ET4-25-4PL0-25-2-0
Ross HV shorting relay. 25 kv, 115v / 60 Hz actuator. DPDT. Center off. Includes removable shorting bar which shorts all terminals in position 1. 5-1/4" x 5" x 7-1/4"H.
High Voltage Relay
30 kv @ 120 amp RMS
(KV) 23598-800559
Ross high voltage relay. Unique double pole, double solenoid design. Safety solenoid must first energize to unlock armature. Then, main armature solenoid can be energized to move shorting bar to bottom contacts. Conservative continuous rating: 120 amps RMS, 30 kv. 5-1/2" x 6-1/2" x 10-1/4"H. NSN: 5945-01-258-3951.
$1,675 each
High Voltage Relay
40 kv @ 125 amps
(KV) E40-DT-40-0-0
Ross HV relay. 40 kv, 125 amps. Peak test contacts: 40 kv. Peak test to ground: 40 kv. Actuator: 115v @ 60 Hz. 3-1/2" x 2-1/4" x 11" high. Used. Contacts show minimal wear. No tool marks.
$675 each
Ross HV Latching Relay
40 kv / 125 amps / 115v AC Coil
(KV) E40-L0-40-2-15-BU
Ross HV latching relay. 40 kv, 125 amps, 115v AC, 50/60 Hz actuators. 3-3/8" x 6" x 8"H. Position indicating micro switches.
Ross HV Shorting Relay
40kv @ 125 amps
(KV) E40-NC-40-2C-15-BD
Ross HV shorting relay. 40kv, 125 amps. 115v, 50/60 Hz coil. Normally closed. Microswitch monitors in both open and closed positions. 4-1/2" x 3" x 7-1/8"H.
*** SOLD OUT ***
Ross Latching Relay
60 kvw / 80 kv peak
(KV) E60-LC-80-1-20
Ross latching relay. 60 kvw / 80kv pk. 1 pole. Actuator: 70v, 60 Hz. NSN: 5945-01-170-4432.
$1,400 each
Ross Relay
40 kv / 200 amps / 115v AC Coil
(KV) E-40
Ross relay. SPDT. 40 kv, 200 amps. 115v AC actuator coil. 6" x 4-1/4" x 11-1/2"H.
$750 each
N.C. Ross Shorting Relay
40 kv / 125 amp / 115v DC Coil
(KV) 850806-14
Normally closed ross shorting relay. 40 kv, 125 amp. Actuator coil is 115v DC. Input is listed as 115v AC / 400 Hz. Two on board rectifiers covert DC for coil. Three SPDT micro-switches prove relay in actuated (open) position. Used, removed.
*** SOLD OUT ***
Replacement Shorting Bar
300 amp
(KV) 994-7883
Make you own shorting relay with this replacement shorting bar. Silver plated copper. 300 amp. 2.93" long, 1.57" wide. Harris P/N: 994-7883-001.
$18 each - $16.50 (3+)
High Voltage
Deadman Safety Switch

(KV) 938-4307
High voltage deadman safety switch. Spring loaded, normally closed. 6.5" long fiberglass rod is connected to silver plated disk that is routed to ground through two, 20k, 25 watt resistors.

At resting position, disk contacts three acorn nuts set on ceramic insulators. The procedure would be to tie HV wires to acorn nuts. The unit is mounted inside the power supply so that when the door on the back closes, it presses on the fiber rod holding the disk off the acorn nuts. When the door opens, the rod spring forces disk to close on all three acorn nuts taking the voltage to ground through the resistors.
*** SOLD OUT ***
2 Pole High Voltage
Deadman Kill Switch
(KV) 7486297G3
General Electric 2 pole high voltage deadman kill switch for transmitter. Each pole has thick aluminum disk at ground potential via braided strap. Disk rests on three ceramic insulators to which your high voltage leads attach. Fiberglass piston is depressed by closed cabinet door holding shorting disk off insulators. Spring return draws disks down to insulators taking any voltage to ground.

Measures 2-3/4" x 6-1/2" x 4" high + 3-1/4" out front for plunger. Made for Harris broadcast.
$175 each