Comparison : Item # SHT3111NA, 110 to 415 Volt (V) Alternating Current (AC) Voltage UL 489 Shunt Trip (SHT)
Item # SHT3111NB, 48 to 60 Volt (V) Alternating Current (AC) Voltage UL 489 Shunt Trip (SHT)
Item # SHT3111NC, 12 to 24 Volt (V) Alternating Current (AC) Voltage UL 489 Shunt Trip (SHT)
Item # SHT31NA, 110 to 415 Volt (V) Alternating Current (AC) Voltage UL 489 Shunt Trip (SHT)
Item # SHT31NB, 48 to 60 Volt (V) Alternating Current (AC) Voltage UL 489 Shunt Trip (SHT)