PU Series Motor Starters

PU Series Motor Starters are designed for reliable motor control and protection in demanding agricultural and industrial applications.

Built with rugged components and dependable overload protection, they ensure smooth performance even under fluctuating voltage conditions.

Suitable for three-phase motors, the PU Series offers safe, efficient, and long-lasting operation.

Engineered with robust-duty contactor and relay for reliable performance.
Incorporates a wide-band moulded coil (180V-415V) suitable for three-phase operations.
Provides highly dependable and efficient thermal overload protection.
Designed to operate effectively under fluctuating temperature, humidity, and voltage conditions.
Supports integration with voltage/current auto SPPR systems, dry-run protection.

Technical Specifications

Parameter	PU - DOL	PU - SASD	PU - FASD
General Rating
Motor Capacity	Up to 17.5 HP	Up to 35 HP	Up to 35 HP
Operating Voltage	415 V	415 V	415 V
Insulation Voltage	690 V	690 V	690 V
Contactor Type	PU1 / PU2 / PU3	PU1 / PU2	PU1 / PU2
AC3 Rating	16A / 25A / 32A	16A / 25A	16A / 25A
Performance
Electrical Endurance	1 Million Operations	1 Million Operations	1 Million Operations
Mechanical Endurance	10 Million Operations	10 Million Operations	10 Million Operations
Coil Specification
Coil Voltage	360 V, 415 V	360 V, 415 V	360 V, 415 V
Pick-up Voltage	50% - 110% of Uc	50% - 110% of Uc	50% - 110% of Uc
Drop-off Voltage	25% - 35% of Uc	25% - 35% of Uc	25% - 35% of Uc
Relay Configuration
Relay Type	PU2	PU2	PU2
Relay Range	(9-14), (13-21), (20-32) & (28-42) A	(9-14), (13-21), (20-32) & (28-42) A	(9-14), (13-21), (20-32) & (28-42) A
Aux Contacts (Built in contacts)	1 NO	1 NO	1 NO
Mounting	Direct	Direct	Direct
Construction Compliance
Ambient Compensation	Yes	Yes	Yes
Terminal Capacity	10 sq.mm	10 sq.mm	10 sq.mm
Enclosure	SS Deep Draw Powder Coated	SS Deep Draw Powder Coated	SS Deep Draw Powder Coated
Protection	IP54	IP54	IP54
Standard	IS/IEC 60947-4-1	IS/IEC 60947-4-1	IS/IEC 60947-4-1
Operating Conditions
Rated Service Temperature	-5°C to 55°C	-5°C to 55°C	-5°C to 55°C
Starts / hour	30 Operations	30 Operations	30 Operations
Back-up Operation	-	Type 2 with HF Fuses	Type 2 with HF Fuses