175G5252 Danfoss
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MPN: MCD202110T6CV1
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The Danfoss 175G5252 is a soft starter from the MCD Soft Starters series, designed for three-phase power applications with a power rating of 110 kW and mains voltage range of 200 to 575 VAC. It features IP00 degree of protection, a control supply voltage of 24 VAC/VDC, and includes internal bypass and motor thermistor trip at 2.8 kΩ. The main contactor output is rated at 6 A at 250 VAC, and the unit supports a short-circuit rating of 10 kA.
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Product Description:
The 175G5252 soft starter is manufactured by Danfoss and belongs to the MCD Soft Starters series. It uses thyristor control to reduce motor inrush current and deceleration shocks, making it suitable for conveyor, pump, and fan applications in industrial automation. The unit is intended for controlled AC motor acceleration, where a smoother voltage ramp can reduce stress on couplings, belts, and driven loads during startup.
The unit connects to three-phase power sources from 200-575 VAC, letting a single model cover low- and medium-voltage networks. It is rated for motors up to 110 kW, matching medium-frame induction machines used on bulk-handling equipment and general process lines. Its mechanical packaging uses frame size C, which fits standard cubicles. The enclosure has an IP00 rating, so the soft starter must be mounted inside a panel that provides shielding and forced airflow. In fault conditions, it can withstand a prospective short-circuit current of 10 kA, and an internal bypass contactor engages after the motor reaches full speed to reduce heat in the power semiconductors during steady operation. The model is in the 202 line of the MCD series and provides a selectable ramp profile along with a 3-second imbalance delay before tripping.
Control terminals are designed for low-voltage logic, helping separate command wiring from the main power path. A start or stop command can be accepted up to 300 VAC, while the control supply requires 24 VAC/VDC with a tolerance of ±20% for reliable gate drive. During each launch, the device draws only 2 A of inrush current, which helps keep the auxiliary supply demand low. Protection functions include a phase-imbalance trip threshold of 30%, a thermistor shutdown point at 2.8 kΩ, and a main-contactor output rated 6 A at 250 VAC for signaling upstream disconnect hardware. The soft starter also helps prevent nuisance trips during transient load swings by applying controlled acceleration instead of an abrupt line start.
Frequently Asked Questions about 175G5252:
Q: What control supply voltage is required for the 175G5252 Danfoss soft starter?
A: The control supply voltage for the 175G5252 soft starter is 24 VAC or VDC.
Q: What is the maximum power rating supported by the Danfoss 175G5252 soft starter?
A: This model provides a power rating of 110 kW, allowing it to handle high-power loads.
Q: Does the Danfoss 175G5252 have an internal bypass feature?
A: An internal bypass is included in the 175G5252 soft starter design.
Q: What is the main contactor output rating of the 175G5252?
A: The main contactor output is rated at 6 A at 250 VAC for this soft starter.
Q: What is the degree of protection rating for the Danfoss 175G5252 soft starter?
A: This model has a degree of protection specified as IP00.
