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MDI Mercury Relays
100NO-24DH
Mercury Relay, 1 Pole, 100 Amp (100A), Normally Open, Inductive/Resistive Loads, Coil Voltage: 24Volts DC, Nylon straps around pole.
$131.80$131.80 -
MDI Mercury Relays
100NO-24DH-6A
Mercury Relay, 1 Pole, 100 Amp (100A), NO, 24VDC, High Voltage, SPST, Nylon Strap Around Poles
$155.70$155.70 -
$35.78$35.78 -
MDI Mercury Relays
60NO-24AH
Mercury Relay, 1 Pole, 60 Amp (60A), NO, 24VAC, Inductive/Lighting Loads, Nylon Strap Around Poles
$58.98$58.98 -
Available Now! 
Available Now!MDI Mercury Relays
60NO-220A
Mercury Relay, 1 Pole, 60 Amp (60A), NO, 208/240V, Nylon Strap Around Poles
$71.88$71.88 -
MDI Mercury Relays
100NO-120AH-6A
Mercury Relay, 1 Pole, 100 Amp (100A), NO, 120VAC, High Voltage, SPST, Nylon Strap Around Poles
$155.70$155.70 -
Available Now! 
Available Now!MDI Mercury Relays
230NO-120A
Mercury Relay, 2 Pole, 30 Amp (30A), NO, 120VAC, Nylon Strap Around Poles
$61.80$61.80 -
Available Now! 
Available Now!MDI Mercury Relays
30NO-120A
Mercury Relay, 1 Pole, 30 Amp (30A), NO, 120VAC, Nylon Strap Around Poles
$34.77$34.77 -
MDI Mercury Relays
100NO-120A
Mercury Relay, 1 Pole, 100 Amp (100A), NO, 120VAC, Nylon Strap Around Poles
$131.80$131.80 -
MDI Mercury Relays
230NO-24A
Mercury Relay, 2 Pole, 30 Amp (30A), NO, 24VAC, Nylon Strap Around Poles
$58.28$58.28 -
MDI Mercury Relays
3100NO-24A
Mercury Relay, 3 Pole, 100 Amp (100A), NO, 24VAC, Metal Strap Around Poles
$398.44$398.44 -
MDI Mercury Relays
3100NO-120A
Mercury Relay, 3 Pole, 100 Amp (100A), NO, 120VAC, Metal Strap Around Poles
$398.44$398.44
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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