Installing the Drawout Circuit Breaker in the Chassis - MTZ1 with MicroLogic Active Control Unit IEC User Guide for AC applications

Drawout Circuit Breaker Handling Conditions

Connection or disconnection of the drawout circuit breaker requires insertion of the racking handle. When chassis locking by keylocks, padlocks, or an open door lock is in place, the racking handle cannot be inserted.

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E or CSA Z462 or local equivalent. This equipment must only be installed and serviced by qualified electrical personnel. Failure to follow these instructions will result in death or serious injury.

NOTICE
HAZARD OF EQUIPMENT DAMAGE Use the provided racking handle to rack the device into or out of chassis. Do not use power tools for racking. Do not turn the handle after position release button has popped out. Failure to follow these instructions can result in equipment damage.

Optional Mismatch Protection

Mismatch protection allows the installation of a drawout circuit breaker only in a chassis with compatible characteristics.

Installing the Circuit Breaker

DANGER
HAZARD OF DEVICE FALLING Be sure that lifting equipment has lifting capacity for the device being lifted. Follow manufacturer’s instructions for use of lifting equipment. Wear hard hat, safety shoes, and heavy gloves. Failure to follow these instructions will result in death or serious injury.

NOTICE
HAZARD OF EQUIPMENT DAMAGE Chassis must be securely fastened when installing or removing the device. Before mounting the device, make sure that it matches the chassis. Failure to follow these instructions can result in equipment damage.

Step	Action
1	If the chassis is not installed yet in a switchboard or panelboard, securely fasten the chassis on a pallet.
2	Remove the racking handle from its storage space.
3	Check that the chassis indicator is in the disconnected position: If the chassis indicator is not in the disconnected position, follow the steps on disconnecting the drawout circuit breaker.
4	Pull out the drawout grips until the extension rails are fully extended.
5	Install the circuit breaker on the extension rails by using appropriate lifting equipment. Check that the four wheels on the sides of circuit breaker are resting on the rails.
6	Detach the lifting equipment.
7	Check that the circuit breaker is in the open position.
8	Using both hands, push in the circuit breaker to the maximum in the chassis. Take care not to push the control unit. The rails stay extended.
9	When the circuit breaker is fully inserted into the chassis, lift and push in the rails to the maximum.

Step	Action
1	If the chassis is not installed yet in a switchboard or panelboard, securely fasten the chassis on a pallet.
2	Remove the racking handle from its storage space.
3	Check that the chassis indicator is in the disconnected position: If the chassis indicator is not in the disconnected position, follow the steps on disconnecting the drawout circuit breaker.
4	Pull out the drawout grips until the extension rails are fully extended.
5	Install the circuit breaker on the extension rails by using appropriate lifting equipment. Check that the four wheels on the sides of circuit breaker are resting on the rails.
6	Detach the lifting equipment.
7	Check that the circuit breaker is in the open position.
8	Using both hands, push in the circuit breaker to the maximum in the chassis. Take care not to push the control unit. The rails stay extended.
9	When the circuit breaker is fully inserted into the chassis, lift and push in the rails to the maximum.

Step	Action
1	If the chassis is not installed yet in a switchboard or panelboard, securely fasten the chassis on a pallet.
2	Remove the racking handle from its storage space.
3	Check that the chassis indicator is in the disconnected position: If the chassis indicator is not in the disconnected position, follow the steps on disconnecting the drawout circuit breaker.
4	Pull out the drawout grips until the extension rails are fully extended.
5	Install the circuit breaker on the extension rails by using appropriate lifting equipment. Check that the four wheels on the sides of circuit breaker are resting on the rails.
6	Detach the lifting equipment.
7	Check that the circuit breaker is in the open position.
8	Using both hands, push in the circuit breaker to the maximum in the chassis. Take care not to push the control unit. The rails stay extended.
9	When the circuit breaker is fully inserted into the chassis, lift and push in the rails to the maximum.