Download Relay Style QBBA1

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Relay Style QBBA1
Twin Dc-Biased Ac-Immune Relay
Use in Ac-Electrified Territory
Immune to false operation from induced ac
voltages, making it a relay of choice in
ac-electrified territory.
Dc-Biased
QBBA1 relays operate on normal voltage
polarity only. Connect two relays with opposite
polarity for two-wire detection block and similar
circuits.
Bias levels are maintained even with reasonable
levels of forward and reverse overvoltage.
Benefits
Ac-immune
Two electrically-independent relays mounted
on one base
Application
Performs like a QBA1 relay while saving space in
a twin package.
Operates on single-polarity dc
Used for dual-polarity detection and block
circuits
Complies with BR specification 961
Datasheet 3E-2
Datasheet 3E-2
Description
Specifications
A twin single-wound dc-biased acimmune relay, compliant with
BR Specification 961.
Specifications apply at a coil temperature of 20°C.
Two electrically-independent relays
mounted side by side on a single base.
Each of the twin relays can operate a
maximum of eight pairs of contacts.
Ordering
Please use part numbers from this
datasheet or our product catalogue, or
contact Siemens to discuss your
requirements with our Sales staff.
Part
number
Nominal
working
volts
Contacts
M25101
50
M25102
50
M25104
issue 4.0
Coil
resistance
(ohms)
Maximum
full
operating
volts
Minimum
release
volts
Plugboard
Part
number
Code
holes
2 x 6F2B
1100
40
7.5
M23650
ABFHJ
2 x 4F4B
1100
40
7.5
M23451
ABCEH
24
2 x 6F2B
240
19.2
3.6
M23651
ACEGK
M25105
24
2 x 4F4B
240
19.2
3.6
M23652
ACEFK
M25131
12
2 x 6F2B
65
9.6
1.8
M25485
BEFGX
M25132
12
2 x 4F4B
65
9.6
1.8
M25484
ABDKS
Contact rating
3 A continuous or 3 BR930A relays
Power consumption
Less than 3 W
Reverse polarity
Less than 20 times rated voltage
AC immunised
12 V relay
500 Vac
24 V relay
1000 Vac
50 V relay
1000 Vac
Reverse dc
immunity
24 V relay
480 Vdc
50 V relay
1000 Vdc
Voltage withstand
20 x rated V results in < 10% change in relay characteristics
Layout of Contacts (Rear View)
F = Front contact, B = Back contact
A
1
2
3
4
5
6
7
8
R1
R3
B
C
D
F
F
F
F
F
F
F
F
B
F
F
B
B
F
F
B
C
C
C
C
RH Relay
6F 2B
LH Relay
6F 2B
1
2
3
4
5
6
7
8
R2
R4
A
B
C
D
F
F
F
F
F
F
F
F
B
B
B
B
B
B
B
B
C
C
RH Relay
4F 4B
C
C
LH Relay
4F 4B
Siemens Rail Automation Pty Ltd
ABN 78 800 102 483
Level 7, 380 Docklands Drive, Docklands,
Victoria 3008, Australia
T +61 1300 724 518
E [email protected]
W www.siemens.com.au/rail-components
© 2014, Siemens Rail Automation Pty Ltd