Comparison : Item # UVT21NA, M1, 110 to 127 Volt (V) Alternating Current (AC) Voltage Under-Voltage Release Trip (UVT)
Item # UVT21NB, M1, 220 to 240 Volt (V) Alternating Current (AC) Voltage Under-Voltage Release Trip (UVT)
Item # UVT21NC, M1, 380 to 440 Volt (V) Alternating Current (AC) Voltage Under-Voltage Release Trip (UVT)
Item # UVT21ND, M1, 24 to 30 Volt (V) Direct Current (DC) Voltage Under-Voltage Release Trip (UVT)
Item # UVT21NE, M1, 48 Volt (V) Direct Current (DC) Under-Voltage Release Trip (UVT)