text.skipToContent text.skipToNavigation text.skipToFooter

W21 Flameproof Motor 3 kW 4P 100L 3Ph 240/415 V 50 Hz IC411 - TEFC - B3R(E)

Product: 11516654

W21Xd is an explosion proof motor especially designed to operate in environments with the presence of explosive atmospheres. It has robust construction, a flame retention system with gaps between the parts carefully designed, accurate machining on the terminal box and screws with high mechanical strength. It meets the requirements of explosive atmospheres like Zone 1 and Zone 2.

Product features
Standard IEC 60034-1
Frequency 50 Hz
Voltage 240/415 V
Number of poles 4
Degree of Protection IP55
Synchronous speed 1500 rpm
Output rating 3 kW
Mounting Foot-mounted
Flange Without
Mounting B3R(E)
Terminal box¹ Right position
Enclosure IC411 - TEFC


Product details

Electric Motors

Frame 100L
Output 3 kW
Number of Poles 4
Frequency 50 Hz
Rated speed 1405 rpm
Slip 6.33 %
Rated voltage 240/415 V
Rated current 10.4/6.01 A
L. R. Amperes 69.7/40.3 A
LRC 6.7
No load current 5.00/2.89 A
Rated torque 2.08 kgfm
Locked rotor torque 250 %
Breakdown torque 260 %
Locked rotor time 14s (cold) 8s (hot)
Moment of inertia (J) 0.0092 kgm²
Design N
Insulation Class F
Service factor 1.00
Temperature rise 80 K
Duty Cycle S1
Starting Method Direct On Line
Ambient temperature -20°C to 40°C
Altitude 1000 m.a.s.l.
Degree of Protection IP55
Enclosure IC411 - TEFC
Mounting B3R(E)
Rotation¹ Both (CW and CCW)
Noise level² 53.0 dB(A)
Approx. weight³ 49.0 kg
(1) Looking the motor from the shaft end.; (2) Measured at 1m and with tolerance of +3dB(A).; (3) Approximate weight, subject to be changed after manufacturing process.; (4) At 100% of full load.


50% 75% 100%
80.0  81.5  81.5 

Power factor

50% 75% 100%
0.68  0.78  0.84 


Frame Material Cast Iron 
Impregnation Method Dip and Bake Polyester 
Space Heater Voltage 200 - 240 V 
Main terminal box hole 2xM20x1,5 
Terminal Block BMC - 6 pins 
Shaft Material SAE 1040/45 Carbon Steel 
Painting MUNSELL 7.5 R 4/14 207A (ISO 12944 - C2) 
Grounding Lugs Double 
Fan Cover material Rolled Steel 
Tropicalized Painting Without 
Fan material Cast Iron 
Bearing cap Yes- Bearing Cap 
Winding thermal protection Thermistor - 2 wires 1 per phase 130°C 
Thermistor - 2 wires 1 per phase 150°C 
Balancing Method 1/2 Key 
Drip Cover Without 



Bearing details

  Drive End Non Drive End
Bearing type 6206 ZZ   6205 ZZ  
Sealing Lip Seal  Lip Seal 
Lubrication interval
Lubricant amount
Grease Type Mobil Polyrex EM 

Foundation loads

Max. traction Max. compression
110 kgf  159 kgf 

Download Center

Filter documents by language: