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Vacuum Relays, SPDT types Gigavac G52WF SPDT vacuum relay
Ceramic body for extra ruggedness and current handling capability. Flange mount type (3 mounting slots). These are physically large, as shown in the accompanying photo with a US one dollar bill for size reference. For manufacturer's data sheet, click here: http://www.gigavac.com/products/relays/datasheets/g52/index.htm Diameter, not including terminals, is 2.375 inches. Diameter of flange is 3.5 inches. Height, (overall) is 5.07 inches. Weight is 1,000 grams, or 35 ounces (2.19 pounds). Terminals are drilled and tapped, and are furnished with mating screws. This is THE choice for the most extreme high-power applications where single pole, double throw contacts are required. Furnished with 26 vdc coil, (60 ohms). Note: an optional 12 vdc coil is also available for this relay, (resistance is 15 ohms, + or – 10%) at a price of only $25.00, and is normally a stocked item. Mfr's list price of relay: $986. By means of a special purchase, we have an unbelievable price on this relay… far too low to publish! EMAIL for your price. Refer to pricing on Gigavac G52WF vacuum relay.
These are another very heavy duty vacuum relay, suitable for most high-power applications requiring this (SPDT) contact configuration. Contacts are rated 75 amps, and 15kv, (20 kv peak)! This IS an RF rated relay! Brand new, unused stock. (Very similar ratings to the extremely popular Jennings type RF10B.) Ceramic body for extra ruggedness and current handling capability. Flange mount type (3 mounting slots). These are fairly physically large, as shown in the accompanying photo with a US one dollar bill for size reference. For manufacturer's data sheet, click here: http://www.gigavac.com/products/relays/datasheets/g9/index.htm Body diameter, not including terminals, is 1.32 inches. Flange diameter is 2.375 inches. Height, (overall) is 3.25 inches. Weight is 300 grams, or 11 ounces . Terminals are drilled and tapped, and are furnished with mating screws. Furnished with 26 vdc coil, (190 ohms). Note: an optional 12 vdc coil is also available for this relay, (resistance is 48 ohms, + or – 10%) at a price of only $25.00, and is normally a stocked item. Mfr's list price of relay: $688. By means of a special purchase, we have an unbelievable price on this relay… far too low to publish! EMAIL for your price. Refer to pricing on Gigavac G9WF vacuum relay.  “VC-2” SPDT Relay We obtained these unbranded relays from an OEM (original equipment manufacturer)in a large lot. They are of similar ratings to types such as Kilovac KC-2, Jennings RJ-2, and Gigavac G2 series. They appear to have been manufactured by one of the major manufacturers for the OEM as an unbranded “house” component, and we are able to offer them brand new, unused, as a very low-cost alternative for the builder looking for a new part with high electrical ratings at a budget price. Contacts rated at 15 kv peak, and 50 amps maximum current. (Solder terminal type.) Supplied with 26.5 vdc coil. Threaded base with mounting nut and washer supplied. Diameter, not including terminals is approximately one inch. Length is 2.125 inch including coil terminals. New / unused. Price each: $95.00 (Order Now!) Jennings RE6B vacuum relay
**NOTE: Furnished with optional "high current" terminals, as shown! These are the largest ones available to our knowledge, and are furnished at no additional charge. These heavy duty terminals increase (slightly) the relay's maximum current handling capability. These terminals use 1/16" hex screws. (Most types of high current terminals on vacuum relays use Bristol spline screws.) **Max-Gain Systems, Inc. is a FULL LINE distributor of genuine Bristol spline products, should you need them for other relays. **** Removed from equipment, checked, and guaranteed. Price: $159 each. (Order Now!) NOTE: We also sometimes have the TORR Labs equivalent type (shown in the photo at top) at the same price. Jennings RJ1A-26S (standard version) SPDT ceramic vacuum relay and RJ1A-26N969 (silicone encapsulated version) SPDT ceramic vacuum relay.
NOTE: Our customers who buy these relays frequently are also seeking high speed reed relays or switching relays. We have the ideal answer in our RFK-6396 relays, here: http://www.mgs4u.com/RF-Microwave/RFrelays_misc.htm Complete specifications for the RJ1A-26N969 from the Jennings website: Complete specifications for the "standard" version of the RJ1A ... the RJ1A-26S... from the Jennings website: Mounting nuts are not included, but are an option (below), since there are better mounting methods available. Both types have identical threaded bases. Click here for discussion of mounting methods for these two types of relays. Click here for photos illustrating grommet mounting options. Photos show close-up views of the 26N969 relays, and a comparative shot of the 26N969 with the 26S version, which may be either the familiar blue paint trim or the imprinted label version (identical).
We also show the mounting nut, as well as the aluminum hold-down bracket and a piece of the silicone sheet material which may be used for mounting these relays. The aluminum hold-down bracket will not work with the 26N969 because of increased diameter of the top of the relay due to the silicone layer. Standard coil voltage on all RJ1 series relays is 26 VDC. Optional 12 vdc coils are now available! Note: These relays are sometimes seen for sale on used medical equipment boards, and can have a high test failure rate. Our stock is tested and hipotted, and fully satisfaction guaranteed! (Why risk your equipment on an "unknown"?) Price for RJ1A-26S : $39.50 Price of OPTIONAL mounting nuts, if needed: $1 each. Aluminum hold-down brackets or silicone sheet will be furnished free with purchase on request. SPECIAL NOTICE .... we are now also an authorized distributor of Gigavac relays, and we have the Gigavac equivalent of the RJ1A-26S (the Gigavac GH-1) available brand new, factory fresh, in your choice of either 12 VDC or 26 VDC coil, at only $69.00 each! We think that this is the lowest price available anywhere on these relays in new condition. If ordering, order as Gigavac GH-1, and specify coil voltage.
Kilovac KC-2/S26 ceramic vacuum relay, SPDT (single pole, double throw) Flange mount version. Close equivalent to the Jennings RJ2C. Coil is 26 VDC, with 250 ohms resistance. Contacts rated at 50 amps maximum, 15 kv operating, and 17 kv peak. Close speed is 15 ms., Release speed is 9 ms., and life is rated at 1,000,000 operations. Length overall is 1.93 inches Weight is 3 ounces. Relay body is 1 inch diameter With 1.62 inch diameter flange with 3 holes / slots for mounting. Removed from equipment, checked, and guaranteed. Price: $149. (Order Now!)
This heavy duty vacuum relay is suitable for many high-power applications requiring this (SPDT) contact configuration. Contacts are rated 50 amps, and 15kv, (20 kv peak)! This IS an RF rated relay! Brand new, unused stock. (Similar in size and ratings to the Jennings RJ2 and Kilovac KC-2 series.) Ceramic body for extra ruggedness and current handling capability. Flange mount type (3 mounting slots). These are relatively compact, as shown in the accompanying photo with a US one dollar bill for size reference. For manufacturer's data sheet, click here: http://www.gigavac.com/products/relays/datasheets/g2/index.htm Body diameter, not including terminals, is 1 inch. Flange diameter is 1.56 inches. Height, (overall) is 2.125 inches. Weight is 84 grams, or 3 ounces . Terminals are drilled and tapped, and are furnished with mating screws. Furnished with 26 vdc coil, (250 ohms). Note: an optional 12 vdc coil (60 ohms) is also available for this relay, and is normally a stocked item. Mfr's list price: $595. By means of a special purchase, we have an unbelievable price on this relay… far too low to publish! EMAIL for your price. Refer to pricing on Gigavac G2WF vacuum relay. EMAIL for your price. Refer to pricing on Gigavac G52WF vacuum relay.
Kilovac HC-2/S3 vacuum relay. SPDT Ceramic, with epoxy / plastic encapsulation. This relay is physically similar to the HC-1 or the Jennings RJ1A, but is not rated for RF frequencies. This relay has copper contacts for high current capacity of 25 amps at DC to 60 Hz., and the encapsulation allows a higher rated operating voltage of 8 Kv, with a peak test voltage of 10 Kv.! This relay meets MIL-R-83725 requirements. It is very fast, with a close speed of 6 ms, and release speed of 6 ms. Coil voltage is 26.5 VDC, and coil resistance is 335 ohms.Pull-in at 16 VDC, drop out 1-10 VDC. Long life rating of 2 million operations. Excellent for high voltage power supply applications. Weight is 1.4 ounces. Length approximately 2 inches overall. With 9/16 inch diameter threaded base for mounting. Nut not included, but is available at $1 additional. Removed from equipment, excellent, guaranteed. Price: $29.00 (Order Now!) Replacement Coils and Contact Sets When a vacuum relay fails, it is of course very rare for both the removable coil and the contact set to both fail at the same time. Lightning damage is normally the only cause of simultaneous failure. The coil is easily removable by means of a screw or nut on the very bottom of the relay. This leaves the contact set (with contacts still sealed in a vacuum). The failed component can be easily replaced at well less than the cost of an entire new unit. COILS:
CONTACT SETS: Jennings RJ1A Price: $22.50 each
We have obtained a small supply of these VERY hard to find replacement vacuum relays as used in the famous ART-13 military autotune transmitter from WW2. Part number is GL-1S21. Some look unused, others appear to have been removed from equipment. All are guaranteed. SPDT. Actuated by external mechanism from the transmitter. Note: To remove or reattach the contact terminals, tiny Bristol spline wrenches may be required. They are cheaply available as the SS-508 L-key kit, here: http://www.mgs4u.com/Bristol-spline-L-keys.htm Price each: $49.00 (Order Now!) Ordering: To order, use our secure online order form, or call us Monday through Friday 8 AM-5 PM Eastern time at 770-973-6251. You may also print the order form using your browser's print button and fax your order to us at 815-461-7730. PLEASE give us your email address so that we can easily contact you in case we have a question. Visa and Mastercard accepted! |
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These are the heaviest-duty vacuum relays we have EVER seen in this (SPDT) contact configuration! Contacts are rated 150 amps, and 25kv (30 kv peak)! This IS an RF rated relay! Brand new, unused stock. 
Gigavac G9WF SPDT vacuum relay 
Jennings RE6B vacuum relay, glass, SPDT. 26 VDC coil, at 120 ohms. (TORR Labs equivalent type also pictured, at top) Full part number is RE6B-26N894 Close equivalent type to Kilovac H-17. Contacts: Maximum current 25 amps, and maximum test voltage is 30 kv! Weight is 7 ounces. 3.25 inches long overall, excluding coil terminals 2.62 inches maximum diameter, excluding optional high current terminals. With 2.62" diameter mounting flange with 6 drilled holes. 
We usually have both types of the extremely popular RJ1A vacuum relays available, the -26S standard version, and the -26N969 silicone encapsulated version. These relays are perfect for high-speed (8 milliseconds or less!) RF switching applications such as "QSK" in RF amplifiers. The major difference in the two types is that the 26N969 version is rated for TWICE the maximum voltage as the -26S. (10 kv as opposed to 5 kv at 60 Hz.) It also has the advantage of even quieter operation due to the layer of highly purified white silicone which is cast over the ceramic of the standard 26S version. It is also slightly more rugged due to the protective layer, and the contact leads are easier to use. While the 26N969 was designed primarily for medical applications and specs are not listed for it to 32 Mhz on the Jennings site, these relays have been used successfully with rave reviews by many of our customers to 30 Mhz. Expected life, both types, is 2 million operations. 
Kilovac KC-2/S26 
Gigavac G2WF SPDT vacuum relay 
Kilovac HC-2/S3
Replacement relay for ART-13 transmitter 