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MDI Mercury Relays
460NC-120A-18
Mercury Relay, 4 Pole, 60 Amp (60A), NC, 120VAC, Steel Strap Around Poles
$265.08$265.08 -
MDI Mercury Relays
235NC-220A-18
Mercury Relay, 2 Pole, 35 Amp (35A), NC, 208/240V, Steel Strap Around Poles
$101.13$101.13 -
MDI Mercury Relays
35NO-24D
Mercury Relay, 1 Pole, 35 Amp (35A), NO, 24VDC, Nylon Strap Around Poles
$41.09$41.09 -
MDI Mercury Relays
435NO-24D-18
Mercury Relay, 4 Pole, 35 Amp (35A), NO, 24VDC, Steel Strap Around Poles
$158.08$158.08 -
Available Now! 
Available Now!MDI Mercury Relays
235NC-120A-18
Mercury Relay, 2 Pole, 35 Amp (35A), NC, 120VAC, Steel Strap Around Poles
$90.63$90.63 -
Available Now! 
Available Now!MDI Mercury Relays
35NO-24AH
Mercury Relay, 1 Pole, 35 Amp (35A), NO, 24VAC, Inductive/Lighting Loads, Nylon Strap Around Poles
$41.09$41.09 -
MDI Mercury Relays
435NO-24A-18
Mercury Relay, 4 Pole, 35 Amp (35A), NO, 24VAC, Steel Strap Around Poles
$158.08$158.08 -
Available Now! 
Available Now!MDI Mercury Relays
230NO-24D
Mercury Relay, 2 Pole, 30 Amp (30A), NO, 24VDC, Nylon Strap Around Poles
$61.80$61.80 -
MDI Mercury Relays
435NO-220A-18
Mercury Relay, 4 Pole, 35 Amp (35A), NO, 208/240V, Steel Strap Around Poles
$205.08$205.08 -
MDI Mercury Relays
230NO-220AU
Mercury Relay, 2 Pole, 30 Amp (30A), NO, 208/240V, Universal Mounting Plate
$75.63$75.63 -
Available Now! 
Available Now!MDI Mercury Relays
35NO-220AH
Mercury Relay, 1 Pole, 35 Amp (35A), NO, 208/240V, Inductive/Lighting Loads, Nylon Strap Around Poles
$50.47$50.47 -
MDI Mercury Relays
435NO-120AT-18
Mercury Relay, 4 Pole, 35 Amp (35A), NO, 120VAC, Steel Strap Around Poles
$172.73$172.73
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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