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Available Now! 
Available Now!MDI Mercury Relays
360NO-24A-18
Mercury Relay, 3 Pole, 60 Amp (60A), NO, 24VAC, Steel Strap Around Poles
$180.47$180.47 -
Available Now! 
Available Now!MDI Mercury Relays
100NC-120A
Mercury Relay, 1 Pole, 100 Amp (100A), NC, 120VAC, Nylon Strap Around Poles
$154.06$154.06 -
Available Now! 
Available Now!MDI Mercury Relays
330NO-220A
Mercury Relay, 3 Pole, 30 Amp (30A), NO, 208/240V, Nylon Strap Around Poles
$104.69$104.69 -
MDI Mercury Relays
2100NC-24A
Mercury Relay, 2 Pole, 100 Amp (100A), NC, 24VAC, Metal Strap Around Poles
$301.22$301.22 -
MDI Mercury Relays
2100NC-220A
Mercury Relay, 2 Pole, 100 Amp (100A), NC, 208/240V, Metal Strap Around Poles
$316.84$316.84 -
MDI Mercury Relays
2100NC-120A
Mercury Relay, 2 Pole, 100 Amp (100A), NC, 120VAC, Metal Strap Around Poles
$310.23$310.23 -
$27.58$27.58 -
Available Now! 
$16.41$16.41 -
MDI Mercury Relays
60NO-24DH-6
Mercury Relay, 1 Pole, 60 Amp (60A), 24VDC, -35° to +85°C Temperature Range, Magnetically Activated, Mercury Contactor
$100.16$100.16 -
MDI Mercury Relays
235NO-120A-19
Mercury Relay, 2 Pole, 35 Amp @ 600VAC Resistive, NO, 120VAC, 50/60HZ Coil, Narrow Bracket, "NRM" Mount Series
$103.60$103.60 -
MDI Mercury Relays
260NO-120ANB
Mercury Relay, 2 Poles, 60 Amp, NO, 120VAC Coil, 50/60Hz, Narrow "NB" Bracket/Backplate
$146.88$146.88 -
MDI Mercury Relays
HPR48D75
SSR, 75 Amp, 480VAC, 1200Vp, 20-280VAC/22-48VDC, 1-Pole, Zero Switching (ZC), LED Indication, Built-In Varistor, Solid State Relay
$98.44$98.44
MDI manufacturers mercury relays and also offers a complete line of level controls, SSRs and switches.
Their contactors are rated from 30 to 100 amps and are encased in hermetically sealed stainless steel tubes to provide reliable switching for millions of operations.
MDI was founded in 1975, remains family owned and is manufactured right in Michigan.
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