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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
35NO-120ATH
Mercury Relay, 1 Pole, 35 Amp (35A), NO, 120VAC, Inductive/Lighting Loads, Nylon Strap Around Poles
$42.03$42.03 -
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 -
MDI Mercury Relays
235NO-220AH-18
Mercury Relay, 2 Pole, 35 Amp (35A), NO, 208/240V, Steel Strap Around Poles
$100.78$100.78 -
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 Mercury Relays
30NO-220A
Mercury Relay, 1 Pole, 30 Amp (30A), NO, 208/240V, Nylon Strap Around Poles
$42.58$42.58 -
MDI Mercury Relays
3100NO-120AH
Mercury Relay, 3 Pole, 100 Amp (100A), NO, 120VAC, Inductive/Lighting Loads, Metal Strap Around Poles
$398.44$398.44 -
MDI Mercury Relays
460NO-120A-18
Mercury Relay, 4 Pole, 60 Amp (60A), NO, 120VAC, Steel Strap Around Poles
$250.39$250.39 -
MDI Mercury Relays
460NO-24D-18
Mercury Relay, 4 Pole, 60 Amp (60A), NO, 24VDC, Steel Strap Around Poles
$236.00$236.00 -
MDI Mercury Relays
2100NC-120A
Mercury Relay, 2 Pole, 100 Amp (100A), NC, 120VAC, Metal Strap Around Poles
$310.23$310.23 -
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
2100NO-220A
Mercury Relay, 2 Pole, 100 Amp (100A), NO, 208/240V, Metal Strap Around Poles
$274.30$274.30
Mercury relays, or mercury contactors, can handle high currents and frequent switching cycles plus they often last for decades with little to no maintenance.
Due to containing mercury, they are often replaced by solid state relays.