Danfoss Electronic Soft Starters

Universal control voltage
The soft starter type MCI is designed for line voltages up to 600 V a.c., feature a universal control voltage, and automatically adjust to 50/60Hz operation.

Robust power chip design
At the heart of every soft starter type MCI is a new power chip that eliminates the thermal problems, which cause early burnouts in traditional solid state technology. We call the technology "LTE", for low thermal expansion.

Short-term overload of up to 800%
Electrical motors, which - dependent on the application typically have a start current of five to eight times the nominal load current, do not constitute any limitation of the start circuit and moment. This, because the power chip of the soft starter is designed to obtain a high power density, carrying capacity, and integration. This way both electrical and thermal design are optimized for these applications, which enable a short term overload of up to 800% of the nominal current.

Compact modular design
The panel builder friendly units are designed that they can be mounted side-by-side, touching each other, without making special rating allowances. The rating is at the usual ambient temperature of 40 degrees centigrade. DIN rail mounting is the same as for conventional contactors.

Easy selection: Fit and Forget
Soft starters type MCI is refreshingly easy to work with as simple to specify and install as standard electromechanical devices. It only takes a moment to configure them, and there's no need for heat sinks or varistors. Select the soft starter based on the motor rating, mount it in the panel using the DIN rail mounting system, connect it to the supply and control voltage and fit it to the load by using the potentiometers in front of the unit to adjust ramp-up time, ramp-down time and initial torque. All the settings stay on their position as they are locked in grooves.

• Individual adjustable acceleration and deceleration times, up to 60 seconds
• Initial torque adjustable from 0 - 85%
• Breakaway function (Kick Start)
• Universal control voltage: 24-480V ac/dc
• Automatic detection of missing phases
• Automatic adaptation to 50/60 Hz
• LED status indicator
• Built-in varistor protection
• Unlimited start/stop operations per hour
• Optional aux. contacts
• Compact DIN rail mountable design

Code number selection
Type                Code No   Weight   Max. load     Control voltage       Control voltage
                                                 [kg]           [Amp]                 dc                        50/60 Hz
MCI 3               037N0074    0.29             3 A             24 -  415 V             24 -  415 V
MCI 12CH       037N0095    0.39           12 A                   -                       208 - 240 V
MCI 15CH       037N0096    0.39           15 A                   -                       208 - 240 V
MCI 15             037N0037    0.71           15 A             24 -  240 V            24 -  240 V
MCI 15             037N0039    0.72           15 A             24 -  480 V            24 -  480 V
MCI 25CH       037N0097    0.43           25 A                   -                       208 - 240 V
MCI 25             037N0040    1.16           25 A             24 -  480 V            24 -  480 V
MCI 25B          037N0062    1.21           25 A             24 -  480 V            24 -  480 V
MCI 30 I-O      037N0070    1.17           30 A             24 -  480 V            24 -  480 V
MCI 50-3 I-O  037N0090     2.87           50 A             24 -  480 V            24 -  480 V

MCI CI-tronic soft starters for refrigeration and compressor applications
Type                Code No     Weight   Max. load     Control voltage      Control voltage
                                                 [kg]           [Amp]                 dc                        50/60 Hz
MCI 15C         037N0076    0.69           15 A             24 – 480 V             24 – 480 V
MCI 25C         037N0077    1.16           25 A             24 – 480 V             24 – 480 V
MCI 50C         037N0088    2.84           50 A             24 – 480 V             24 – 480 V
 

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