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PTC Thermistors according to DIN 44081
Three thermistors encapsulated in one winding head (1 per phase) offer the most effective protection against motor overheating. External controllers can be connected in the motor junction box. Nominal motor operating temperature is 155 ºC.

Temperature Sensors
Temperature sensors open an electric circuit when a pre-determined, non-adjustable temperature is reached.
Temperature sensors complying with VDE 0631 are used:
Typ S01   250V; 50 Hz; 1,6 A at cos φ = 0,6; 2,5 A at cos φ = 1
Typ S06   250V; 50 Hz; 6,3 A at cos φ = 0,6; 10 A at cos φ= 1
                 Motor current direct-on-line starting (single-phase motors only)

Temperature Measurements with KTY-Sensors
KTY sensors allow measurements of winding temperature for status monitoring. Sensor resistance changes with the temperature allowing exact measurements over a wide temperature range. Type KTY 84-130 can be directly monitored by ABM inverter controllers type LDC CDA/CDB.

Junction Box
Plastic junction boxes are standard. Upon customer request aluminum junction boxes with integrated rectifiers can be supplied with brake motors.

Custom Output Shafts
In addition to straight shafts per DIN 748 custom shaft ends for custom applications are available.

Elevated Protection Class
In addition to standard enclosure protection classes per VDE 0530, elevated protection for aggressive environments such as damp locations, dairies and high humidity are available.

Coats of Paint
Motor housings and end shields of ABM electric motors are made from corrosion-resistant aluminum. Junction boxes and fan shrouds are made from black plastic. Typically, painting is not required. The following standard coats of paint colors are available (1K acrylic paint):
RAL 7031 (Blue grey), RAL 2002 (Vermilion), RAL 5017 (Traffic Blue), RAL 6011 (Reseda green), RAL 9005 (Jet black) and RAL 9010 (Pure white).
Other finishes upon request.

Rotary Encoders
• HTL encoder (24 V signal) with 1024 pulses, A and B channel for frequency
  converter applications.
• Sin - Cos - encoder (1 Vpp) with 1024 pulses , A, , B, , 0 channels for
  applications  with servoconverter.
• Integrated sensor bearings from world known manufacturers.
• TTL-encoder (5 V level signal) with 1024 pulses, , A, , B; , 0 channels for
  use with positioning inverters.
Other encoders and pulse counters available upon request.

Forced Ventilation
Auxiliary, electrical fans are used should the motor's own fan be inadequate in cooling. This applies to severe working conditions such as automatic operation, low speeds (frequency inverter operation) or frequent switching. Each auxiliary fan consists of a sturdy motor/fan unit, its own junction box, a galvanized metal shroud and glass fiber reinforced polyamide fan blades and meets IP66 enclosure class.
Junction boxes can be rotated to all positions and cable entry M16x1.5 is available in positions 1 and 3.
Power supplies:          3 AC 220-290 V / 380-500 V D/S, 50/60 Hz
                                        1 AC 230-277 V, 50/60 Hz (Steinmetz connection)