BUSCH R5 RC 0021 C User Manual

Electrical Connection | 6
Instruction Manual R5 RB_RC 0021 C_EN_en 13 | 32
● Busch recommends installing a D-curve circuit breaker.
● Connect the protective earth conductor.
● Electrically connect the motor.
NOTICE
Incorrect connection.
Risk of damage to the motor!
● The wiring diagrams given below are typical. Check the inside of the terminal box for motor con-
nection instructions/diagrams.
6.2 Wiring Diagram Single-Phase Motor
Connection Scheme of Alternating Current Motor
Explanation of color coding:
BK = black
BN = brown
BU = blue
GN = green
RD = red
YE = yellow
6.3 Wiring Diagram Three-Phase Motor
NOTICE
Incorrect direction of rotation.
Risk of damage to the machine!
● Operation in the wrong direction of rotation can destroy the machine in a short time! Prior to
start-up, ensure that the machine is operated in the right direction.
● Determine the intended direction of rotation with the arrow (stuck on or cast).
● Jog the motor briefly.
● Watch the fan wheel of the motor and determine the direction of rotation just before the fan
wheel stops.
If the rotation of the motor must be changed:
● Switch any two of the motor phase wires.
Delta connection (low voltage): Star connection (high voltage):

BUSCH R5 RC 0021 C Specifications

General

Brand	BUSCH
Model	R5 RC 0021 C
Category	Water Pump
Language	English