CIRCUTOR MCB Series - Manual (Page 2)

MCB.P and MCB.T
Miniature circuit breaker
with remote-control
The MCB.P or MCB.T are circuit breakers that provides
a combination of overcurrent protection and contactor
functions into the same element. The MCB.T version
incorporates two auxiliary contacts that indicate the state of
the remote control input and of the overcurrent protection.
For the MCB.P and MCB.T version, an auxiliary contact
can be added to the instrument for the indication of an
overcurrent trip or a manual action over the circuit breaker.
As a circuit breaker operation, two trip conditions are
set:
Delayed thermal trip (overload protection).
Quick electromagnetic trip (short-circuit protection).
The remote control function operates over the same
contacts that the circuit breaker does, guarantying the trip
for any case, and avoiding a remote control connection after
a manual or overcurrent trip occurrence.The remote control
function is electro-magnetically carried out by the
application of an excitation voltage during 20 ms between
terminals ON (terminals 1-3) and OFF (terminals 2-3).
A built-in optical indication permits to know the system
state (red = ON, green = OFF) regardless the trip cause.
The protection set has three different positions
according to the trip condition:
Open circuit breaker. Trip due to overload or short-circuit
event; remote control switching on action not allowed. For a
manual switching on, the lever must be moved to the OFF
position and then raised to the ON position.
Closed circuit breaker. A remote control is
allowed.
Open circuit breaker. Manual trip. A remote
control is not allowed.
!
!
!
!
!
RESET position (intermediate between ON & OFF).
ON position.
OFF position.
The MCB.T model incorporates two free-voltage
auxiliary contacts in the remote control module.
These contacts leave through a tree-cable
connector (white, green and brown cables) referred to a
same common point:
White cable: common
and cables: information about the remote
control state.
ON: closed contact (remote control ON )
OFF: open contact (remote control OFF )
and white cablse: information about the
lever position ON RESET-OFF.
ON: closed contact (lever at ON )
OFF: open contact (lever at RESET or OFF)
and cables: information of overcurrent or
earth leakage trip.
Take into account that:
The remote control contact indicates the received
commands regardless the circuit breaker state (ON, OFF,
RESET position).
!
!
!
!
Green white
Brown white
Brown green
The MCB.T must be only controlled by pulse type
signals (20 ms of duration), otherwise, the control
remote module might suffer irreparable damage. The
MCB.T will only be applicable to WRKRT-25T series
differential relays.
ON: closed contact (No trip)
OFF: open contact (earth leakage or overcurrent trip)
MCB.T Installation
The breaker can be mounted in any position on an EN 50
022 (35 mm wide) top-hat rail..
To install, place the MCB.P with remote control mechanism
on the rail, adjust to the desired position, then lock the rapid
fastening system (see fig. 1 y 2)
fig. 1 fig. 2
The unit caneasily be removed from its mounting position
retrospectively, if required, by releasing the rapid fastening
system with a screwdriver (see fig. 3)
fig. 3
Vial Sant Jordi, s/n
08232 Viladecavalls
Barcelona ( Spain)
Tel. (+34) 93 745 29 00
Fax 93 745 29 13 (export)/ 93 745 29 05
e-mail: [email protected]
web: www.circutor.com
(+34)
Rated voltage
Exciting current
Frequency
Exciting current duration >
Nr. of operations >
Switching changes
Connecting terminals
Type of protection
210 V ....230 V a.c.
1.5 A
50Hz/60Hz
20 ms
20.000
max. 12/min
Shock protected to
DIN VDE 0106,part 100
DIN 40 050 IP 20
Technical Data:
.
Connection
The MCB is equipped with open, combination-type box
terminals with multo-slot screws on the input and output
sides, permitting the connection of fine-strand or solid
conductor with a cross section of 1-25 mm . Specified
tightening torque, 2Nm.
The remote control mechanism is provided with screw
terminals, suitable for the connection of conductors up to
max. 2.5 mm .Specified tightening torque, 0.8 Nm.
2
2 .
MCB.P - WRKRT-25T diagramm connection
MCB.T - WRKRT-25T diagramm connection
LOAD
3
1
2
L3 L2 L1 N
T
R
COM A2
2 1 A1
R1 R2
EXTERNAL
RESET
0.5 0.5
1
0.75
1 0.5 0.5
DELAY
s
A
0.02
0.1
0.3 0.3 0.1
0.3 0.3
3 0.03 POWER
T
S T
E
E R
T E S
Un 230V Un 230V type WRKRT-25T type WRKRT-25T
LOAD
3
1
2
L3 L2 L1 N
T
R
COM A2
2 1 A1
R1 R2
Auxiliary contacts
(White) COMMON
(Brown )
state inf.
ON-OFF-
RESET level
(Green ) Remote
control state inf.
EXTERNAL
RESET
0.5
1 0.75
1 0.5
DELAY
s
A
0.02 0.1
0.3 0.1
0.3
3 0.03 POWER
T
S
T E
E
R
T
E S
Un 230V Un 230V type WRKRT-25T type WRKRT-25T
Cód: M98138201-20-03A