Relay Solutions
BR 930 SERIES
Siemens.com/mobility
QNC1 Relay
A dc neutral, tractive armature contactor
General data
Contact Arrangement:
2F(HD) 4B, 2F(HD) 2F 2B
and 2F(HD) 5B
Nominal Rated Voltage: 24 and 50V dc
Approximate Weight:
1.35 kg
Note: Refer to the following data sheets:
•
7-1-1 for general information and contact
ratings.
•
7-2-1 for dimensions.
•
8.2 for tools.
•
8.3 for plugboard and connector details.
Refer overleaf for speci c data.
Description
In addition to signalling contacts it is tted with two Heavy Duty HD front contacts with magnetic blow out.
The relay is ac immune to 240 V ac rms 50 Hz. It is designed primarily for the control of point machine motors.
HD Contacts and Wiring arrangement
Each heavy duty contact terminal is connected to two
plugboard connectors in parallel, each connector should be
wired with two wires in parallel to handle the heavy currents
involved. To ensure efficient operation of the magnetic
blowouts the connection polarity shown below must be
observed for d.c. operation.
Note:
The back contacts can be connected in series to give
detection of a welded heavy duty front contact.
Contact Layout viewed from rear
A
1
2
3
4
5
B
C
D
Supply
+
1
Load
-
3
B
8
B
Supply
-
B
R1
coil
7
coil
R3
C
D
A
B
C
D
Supply
+
F
Load
-
B
Load
-
B
Load
+
B
Load
+
B
8
B
Supply
-
B
Supply
-
B
R2
coil
4
Load
+
B
F
2
B
6
A
5
6
7
Supply
+
coil
coil
coil
R4
2F(HD) 4B
2F(HD) 2F 2B
2F(HD) 5B
Packaging
EMC Compliance
Q-Relays are packed in a carton holding ten relays;
the same container is used for quantities of four
to nine relays. Quantities less than four are packed
individually in cardboard boxes, as are all traincarried relays. Each container has a bar-coded label
affixed to the outside, stating details of the packaged
relay(s) and the quantity therein.
Q-Relays comply with the relevant emission
requirements of EN 55014. It is considered that these
relays have inherent immunity to in-service electromagnetic disturbance.
A Technical Certi cate for EU Directive on EMC
(89/336/EEC) has been obtained.
Technical data
SIEMENS
Part No.
(PAD No.)
CONTACT
ARRANGEMENT
RATED VOLTAGE
(V dc)
PIN
CODE
COIL RES
(OHMS)
WDG SPEC
1/108/-
MAX FULL
OP.
(V dc)
MIN REL
(V dc)
PLUGBOARD
REQD No. OF
CONNECTORS
J4137/3
REMARKS
B18550/1
(85/001545)
2F(HD) 4B
50
166
BCDJK
1800
85
40
14
J4138/250
18
BRB Spec. 966 F1
B18550/2
(85/001535)
2F(HD) 4B
24
167
BCEFK
270
90
19.2
8.5
J4138/261
18
B18550/3
2F(HD) 2F 2B
50
XBFJK
1800
85
40
14
J4138/284
18
----
B18550/4
2F(HD) 5B
50
XDFGK
1800
85
40
7.5
J4138/346
20
----
BRB Spec. 966 F1
Un-drilled plugboard
Part No. E7218/1
Representation of Relay,
Plugboard and Retaining clip
(Clip Part No. J4136/1)
Siemens Ltd
Infrastructure & Cities Sector
Mobility and Logistics Division
Rail Automation
PO Box 79
Pew Hill
Chippenham
Wiltshire SN15 1JD
UK
www.siemens.com/rail-automation
Printed in the United Kingdom
Data Sheet 7-2-51
X342/55/000070 Revision 04
The information within this document
contains general descriptions of the
technical options available, which do not
always have to be present in individual cases.
The required features should therefore be
speci ed in each individual case at the time
of closing the contract.