Contactors, Thermal Overload Relays and Motor Protection Switches

• 3-pole motor protection switch for rated motor currents from 0.16A to 32A
• Phase failure sensitive
• Side and front auxiliary contacts can be retrofitted
• Suitable for motors of efficiency class IE3

• 3-pole motor protection switch for rated motor currents from 24A to 63A
• Phase failure sensitive
• Side and front auxiliary contacts can be retrofitted
• Suitable for motors of efficiency class IE3

Extensive accessories for ALEA II motor protection switches Type BE5 & BE6 for signalling with auxiliary contacts or remote tripping by means of undervoltage release or shunt tripping.

Busbars

• Fork wiring rated current 63A
• For wiring up to 5 BE5 motor protection switches, available for BE5 with or without lateral auxiliary contacts
• Auxiliary contacts fitted at the front do not increase the width of the motor protection switch
• For more than 63A total rated current — use 63A busbar with central supply block

• Contactors from 3kW to 7.5kW, 3 poles with an integrated auxiliary contact NO or NC
• Contactors LTD0 can be equipped with an additional 2- or 4-pole auxiliary contact block
• Mirror contact included
• Switching elements meet EN 50012
• DC operated contactors with integrated varistor protection
• Matching overvoltage limiters LTZ0
• Contactors LTD0 can be fitted with thermal overload relays of Type LTT0
• Can be installed on TS35 rails or mounting plates

• Contactors from 7.5kW to 18.5kW, 3 poles with an integrated auxiliary contact NO or NC
• Contactors LTD1 can be equipped with an additional 2- or 4-pole auxiliary contact block
• Mirror contact included
• Switching elements meet EN 50012
• DC operated contactors with integrated varistor protection
• Matching overvoltage limiters LTZ1
• Contactors LTD1 can be fitted with thermal overload relays of Type LTT1
• Can be installed on TS35 rails or mounting plates

• Contactors from 18.5kW to 37kW, 3 poles
• Contactors LTD2 can be equipped with an additional 2- or 4-pole auxiliary contact block
• Switching elements meet EN 50012
• DC operated contactors with integrated varistor protection
• Matching overvoltage limiters LTZ3
• Contactors LTD2 can be fitted with thermal overload relays of Type LTT2
• Can be installed on TS35 rails or mounting plates

• Contactors from 37kW to 90kW, 3 poles
• Contactors LTD3 can be equipped with an additional 2- or 4-pole auxiliary contact block
• Switching elements meet EN 50012
• DC operated contactors with integrated varistor protection
• Matching overvoltage limiters LTZ3
• Contactors LTD3 can be fitted with thermal overload relays of Type LTT3
• Can be installed on TS35 rails or mounting plates

• Contactors from 90kW to 110kW, 3 poles with 2 NO and 2 NC integrated auxiliary contacts
• Contactors LTD4 can be equipped with additional lateral auxiliary contacts LTZ3D711 and LTZ3D811
• Switching elements meet EN 50012
• Varistor protection integrated in the control electronics
• Installation on mounting plate

• Contactors from 132kW to 160kW, 3 poles with 2 NO and 2 NC integrated auxiliary contacts
• Contactors LTD5 can be equipped with additional lateral auxiliary contacts LTZ5D711 and LTZ5D811
• Switching elements meet EN 50012
• Varistor protection integrated in the control electronics
• Installation on mounting plate

• Contactors from 200kW to 250kW, 3 poles with 2 NO and 2 NC integrated auxiliary contacts
• Contactors LTD6 can be equipped with additional lateral auxiliary contacts LTZ5D711 and LTZ5D811
• Switching elements meet EN 50012
• Varistor protection integrated in the control electronics
• Installation on mounting plate

• 4-pole auxiliary contactors for controls
• LTH auxiliary contactors can be extended to accommodate 6 or 8 poles with the additional auxiliary contacts LTZ0H
• In LTH contactors, the coil and main contacts cannot be replaced
• Can be installed on TS35 rails or mounting plates

• The LTK capacitor contactors are a special version of the LTD contactors sizes 1 to 2.
• The capacitors are precharged via 3 front-mounted, early make NO auxiliary contacts with resistors. The main contacts close very shortly after these auxiliary contacts. This prevents interfering feedback effects on the mains and the welding of the contactor contacts. Capacitor contactors are only allowed for switching discharged capacitors.
• Technical data according to IEC 60947-4-1 EN 60947-4-1
• The capacitor contactors LTK1 are equipped with 1 NO and 1 NC free auxiliary contacts
• The capacitor contactors LTK2 are equipped with a 1 NO free auxiliary contact
• The LTK capacitor contactors cannot be equipped with additional auxiliary contacts
• Can be installed on TS35 rails or mounting plates

• 4-pole contactors from 20A to 200A AC-1
• Contactors LTR0 and LTR1 can be equipped with front-mounted 2-pole or 4-pole auxiliary contacts
• Contactors LTR2 and LTR3 can be equipped with front-mounted or lateral 2-pole or 4-pole auxiliary contacts
• Matching overvoltage limiters for contactors LTR0 - LTZ0
• Matching overvoltage limiters for contactors LTR1 - LTZ1
• Matching overvoltage limiters for contactors LTR2 and LTR3 - LTZ3
• Electrical data identical with the data for contactors LTD0 to LTD3
• Can be installed on TS35 rails or mounting plates

Reversing contactor

• Pre-wired reversing contactor combinations up to 4kW with integrated mechanical interlocking
• 1 free NO auxiliary contact per contactor
• Thermal overload relays LTT0 (not included in the reversing contactor combination) are also required and available separately
• Higher performances for reversing contactor combinations can be realised by self-assembly using individual components

Star-delta contactor

• Pre-wired star-delta contactor combinations up to 22kW with integrated mechanical interlock between delta and star contactor
• Thermal overload relays LTT (not included in star-delta contactor combination) are also required and available separately
• LTT thermal overload relays can be mounted directly on the contactor or by using suitable mounting brackets on DIN rail TS35
• Higher performances for star-delta contactor combinations can be realised by self-assembly using individual components

• Overload relay with phase failure protection for direct mounting on size 0 contactors
• Equipped with potential-free 1 NO + 1 NC auxiliary contact, manual and automatic RESET, TEST function and STOP button, feed-through 14/22 auxiliary contact terminal and coil terminal A2 of the contactor

• Overload relay with phase failure protection for direct mounting on size 1 contactors
• Can be installed separately using the mounting bracket LTZ1TE01
• Equipped with potential-free 1 NO + 1 NC auxiliary contact , manual and automatic RESET, TEST function and STOP button, feed-through 14/22 auxiliary contact terminal of the contactor

• Overload relay with phase failure protection for direct mounting on size 2 contactors
• Can be installed separately using the mounting bracket LTZ2TE01
• Equipped with potential-free 1 NO + 1 NC auxiliary contact, manual and automatic RESET, TEST function and STOP button

• Overload relay with phase failure protection for direct mounting on size 3 contactors
• Equipped with potential-free 1 NO + 1 NC auxiliary contact, manual and automatic RESET, TEST function and STOP button