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Available Now! 
Available Now!MDI Mercury Relays
35NC-120AT
Mercury Relay, 1 Pole, 35 Amp (35A), NC, 120VAC, Nylon Strap Around Poles
$46.88$46.88 -
MDI Mercury Relays
2100NO-220A
Mercury Relay, 2 Pole, 100 Amp (100A), NO, 208/240V, Metal Strap Around Poles
$274.30$274.30 -
Available Now! 
Available Now!MDI Mercury Relays
60NO-24DH
Mercury Relay, 1 Pole, 60 Amp (60A), NO, 24VDC, Inductive/Lighting Loads, Nylon Strap Around Poles
$62.50$62.50 -
MDI Mercury Relays
2100NO-120AH
Mercury Relay, 2 Pole, 100 Amp (100A), NO, 120VAC, Inductive/Lighting Loads, Metal Strap Around Poles
$258.67$258.67 -
$148.17$148.17 -
MDI Mercury Relays
2100NO-120A
Mercury Relay, 2 Pole, 100 Amp (100A), NO, 120VAC, Metal Strap Around Poles
$266.41$266.41 -
MDI Mercury Relays
60NO-24A
Mercury Relay, 1 Pole, 60 Amp (60A), NO, 24VAC, Nylon Strap Around Poles
$58.98$58.98 -
MDI Mercury Relays
2100NC-24D
Mercury Relay, 2 Pole, 100 Amp (100A), NC, 24VDC, Metal Strap Around Poles
$301.22$301.22 -
MDI Mercury Relays
60NO-220AH
Mercury Relay, 1 Pole, 60 Amp (60A), NO, 208/240V, Inductive/Lighting Loads, Nylon Strap Around Poles
$71.88$71.88 -
MDI Mercury Relays
235NO-24DH-18
Mercury Relay, 2 Pole, 35 Amp (35A), NO, 24VDC, High Voltage, Steel Strap Around Poles
$82.03$82.03 -
Available Now! 
Available Now!MDI Mercury Relays
60NO-120AH
Mercury Relay, 1 Pole, 60 Amp (60A), NO, 120VAC, Inductive/Lighting Loads, Nylon Strap Around Poles
$62.50$62.50 -
Available Now! 
Available Now!MDI Mercury Relays
235NO-24D-18
Mercury Relay, 2 Pole, 35 Amp (35A), NO, 24VDC, Steel Strap Around Poles
$82.03$82.03
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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