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Instruction Leaflet for Installation of Q-Frame
Motor Circuit Protector, Type MCP (with Electronic Trip Device)
WARNING
CONTACT WITH ENERGIZED EQUIPMENT CAN
RESULT IN DEATH, SEVERE PERSONAL INJURY, OR
SUBSTANTIAL PROPERTY DAMAGE. DO NOT
MAINTENANCE ON EQUIPMENT WHILE IT IS
ENERGIZED. ALWAYS VERIFY THAT NO VOLTAGE IS
PRESENT BEFORE PROCEEDING WITH THE TASK,
AND ALWAYS FOLLOW GENERALLY ACCEPTED
SAFETY PROCEDURES.
ALLEN-BRADLEY IS NOT LIABLE FOR THE
MISAPPLICATION OR MISINSTALLATION OF ITS
PRODUCTS.
The user is cautioned to observe all recommendations,
warnings, and cautions relating to the safety of personnel
and equipment as well as all general and local health and
safety laws, codes, and procedures.
The recommendations and information contained herein
are based on Allen-Bradley experience and judgement,
but should not be considered to be all-inclusive or cover-
ing every application or circumstance which may arise. If
any questions arise, contact Allen-Bradley for further
information or instructions.
1. INTRODUCTION
General Information
The Q-Frame instantaneous (magnetic-only)
Motor Circuit Protector (MCP) (Fig. 1-1) has a rating
of 600A. . The MCP is available as Type MCP
in 3-pole frames only. The MCP is designed
to comply with the applicable requirements of Underwrit-
ers Laboratories, Inc. Standard UL489 and the Interna-
tional Electrotechnical Commission Recommendations
N
. IEC 947-2.
O
The MCP is a UL-recognized component. It is
used primarily to provide short-circuit protection
as part of a combination controller where other circuit
protective functions are performed by other devices
within the controller. Since the Q-frame MCP is a non-
sealed device, it is marked LINE and LOAD and is not
40752-081(1)
Effective 2/03
suitable for reverse feed applications.
This instruction leaflet (IL) gives procedures for installa-
tion, operation, and field testing of Q-frame MCPs.
For this publication, the term motor circuit protection
(MCP) shall also include instantaneous (magnetic)
only circuit interrupters.
I
Fig. 1-1 Q-frame Type MCP Motor Circuit
Protector
2. INSTALLATION
The installation procedure consists of inspecting the
MCP and, as applicable, installing accessories, and ter-
minals; mounting the MCP; connecting the line and load
conductors; torquing terminals; and attaching terminal
shields. The MCP, accessories, mounting hardware, and
unmounted terminals may be supplied in separate pack-
ages. To install the MCP, perform the following steps.
Note: Internal accessory installation in any type of
circuit breaker should be done before the circuit
breaker is mounted and connected. Refer to individ-
Bul. 140M
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Summary of Contents for Rockwell Automation Allen-Bradley MCP
- Page 1 Bul. 140M Instruction Leaflet for Installation of Q-Frame Motor Circuit Protector, Type MCP (with Electronic Trip Device) suitable for reverse feed applications. WARNING This instruction leaflet (IL) gives procedures for installa- tion, operation, and field testing of Q-frame MCPs. For this publication, the term motor circuit protection CONTACT WITH ENERGIZED EQUIPMENT CAN (MCP) shall also include instantaneous (magnetic) RESULT IN DEATH, SEVERE PERSONAL INJURY, OR...
- Page 2 Page ual accessory instruction leaflets for specific instal- lation instructions on field installable accessories. WARNING 2-1. Compare nameplate data with existing equipment ratings and system requirements to make sure that THE VOLTAGES IN ENERGIZED EQUIPMENT CAN the MCP is suitable for the intended installation. CAUSE DEATH OR SEVERE PERSONAL INJURY.
- Page 3 Page d. Install MCP mounting screws and washers. Tighten screws firmly, but do not exceed 28 Ib-in. Panhead Screws (3 N.m). Panhead and Lockwashers 140U-Q-TLC2 Screws (Installed before Terminal Lug Cable Clamping 140U-Q-TLA2 Lockwashers Screws) CAUTION Terminal Lug WHEN ALUMINUM CONDUCTORS ARE USED, THE APPLICATION OF A SUITABLE JOINT COMPOUND IS RECOMMENDED TO REDUCE THE POSSIBILITY OF TERMINAL OVERHEATING.
- Page 4 Page 3. REPLACEMENT OF EXISTING MOTOR CIRCUIT PROTECTORS Line End 3-Pole MCP 3.438 1.719 (43.66) 3.281 Panel Escutcheon Cutout Sizes Existing cutouts must be modified to agree with requirements shown in Fig. 2-3. 2.292 (58.22) Handle Throw Positions Existing handle mechanisms may need to be modified or replaced.
- Page 5 Page 4. MANUAL OPERATION AND TRIP UNIT Inspection ADJUSTMENT MCPs in service should be inspected periodically. The inspection should include the following checks 5-1 Manual Operation through 5-8. Manual operation of the circuit breaker is controlled by the MCP handle and the PUSH-TO-TRIP button in the WARNING trip unit.
- Page 6 Page 6 dence of overheating, terminations should be cleaned or replaced. Before re-energizing the MCP, Handle International all terminations and cables should be refurbished to Position Symbols Indicator the originally installed condition. Color: Red White TRIP Check MCP mounting hardware, and tighten if nec- Green OFF (Reset) essary.
- Page 7 Page NOTES 40752-081(1) Effective J2/03...
- Page 8 Page 8 40752-081(1) Effective: 2/03 Printed in USA/TQC...