https://www.phoenixcontact.com/pi/products/2908716
Electronic device circuit breaker - CBMC E4 24DC/1-10A NO-
C - 2908716
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Multi-channel electronic device circuit breaker that can be preconfigured, for protecting four loads at 24 V DC
in the event of overload and short circuit. With electronic locking of the set nominal currents. For installation
on DIN rails.
Your advantages
Easy device replacement without replanning, thanks to compact design and options for individual adjustments
Circuits can be adjusted without any tools by means of one single pushable LED button
Pre-configuration available – for device protection that meets the specific requirements of your system
Reliable protection against unintentional adjustment of current values, thanks to electronic locking
Status LEDs in traffic light colors enable instantaneous determination of operating states
Key Commercial Data
Packing unit
Minimum order quantity
1 pc
6 pc
Technical data
Dimensions
Height
Width
Depth
90 mm
36 mm
98 mm
Ambient conditions
Ambient temperature (operation)
Ambient temperature (storage/transport)
Humidity test
Altitude
Shock (operation)
Vibration (operation)
-25 °C ... 60 °C
-40 °C ... 70 °C
96 h, 95% RH, 40°C
≤ 2000 m (amsl (above mean sea level))
30g (IEC 60068-2-27, Test Ea)
10 Hz ... 57.6 Hz (Amplitude ±0.35 mm; in accordance with
IEC 60068-2-6, Test Fc)
57.6 Hz … 150 Hz (Acceleration 5g; in accordance with IEC 60068-2-6,
Test Fc)
10/23/2018 Page 1 / 7
https://www.phoenixcontact.com/pi/products/2908716
Electronic device circuit breaker - CBMC E4 24DC/1-10A NO-
C - 2908716
Technical data
Ambient conditions
Degree of protection
IP20
General
Flammability rating according to UL 94
Mounting type
Color
Number of positions
Protection class
Type
V-0
DIN rail: 35 mm
light grey RAL 7035
4
III
DIN rail module, one-piece
Electrical data
Fuse type
Rated surge voltage
Operating voltage
Rated voltage
Rated current I
N
electronic
0.5 kV
18 V DC ... 30 V DC
24 V DC
max. 40 A DC (IN+)
max. 40 A DC (per terminal position when bridging additional devices via
IN+)
1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 A DC (Adjustable or fixed per output
channel)
Measuring tolerance I
Feedback resistance
Fail-safe element
Efficiency
Closed circuit current I
0
Power dissipation
Module initialization time
Waiting time after switch off of a channel
Temperature derating
± 15 %
max. 35 V DC
15 A DC (per output channel)
> 99 %
typ. 33 mA
typ. 0.8 W (No-load operation)
< 9 W (Nominal operation)
1.6 s
5 s (at overload / short circuit)
24 A DC (at 60°C)
28 A DC (at 54°C)
32 A DC (at 47°C)
36 A DC (at 41 °C)
40 A DC (at 35 °C)
Tripping method
Required backup fuse
Dielectric strength
Contact type
MTBF (IEC 61709, SN 29500)
E (electronic)
not required, integrated failsafe element
max. 35 V DC (Load circuit)
without electrical isolation
8403361 h (at 25°C with 21% load)
3067484 h (at 40°C with 34.25% load)
534188 h (at 60°C with 100% load)
10/23/2018 Page 2 / 7
https://www.phoenixcontact.com/pi/products/2908716
Electronic device circuit breaker - CBMC E4 24DC/1-10A NO-
C - 2908716
Technical data
Electrical data
Shutdown time load circuit
Undervoltage shutdown load circuit
Surge voltage shutdown load circuit
≤ 10 ms (for short circuit > 2.0 x I
N
)
1 s (1.2 ... 2.0 x I
N
)
≤ 17.8 V DC (active)
≥ 18.8 V DC (inactive)
≥ 30.5 V DC (active)
≤ 29.5 V DC (inactive)
Max. capacitive load load circuit
45000 µF (Depending on the current setting and the short-circuit current
available)
Remote indication contact
Connection name
Switching function
Stripping length
Conductor cross section solid
Conductor cross section AWG
Conductor cross section, flexible, with ferrule, with plastic sleeve
Conductor cross section flexible, with ferrule without plastic sleeve
DC operating voltage
DC operating current
Remote indication circuit
N/O contact
10 mm
0.2 mm² ... 2.5 mm²
24 ... 12
0.25 mm² ... 1.5 mm²
0.25 mm² ... 2.5 mm²
0 V DC ... 30 V DC
100 mA DC
Signaling
Channel LED off
Channel LED green
Channel LED yellow
Channel LED red
off (Channel switched off)
lit (Channel switched on)
lit (Channel switched on, channel load > 80% )
flashing (Programming mode active)
lit (Channel switched off, over- or undervoltage active)
ON temporarily (Channel switched off, 5 s cool-down phase, overload or
short-circuit release)
flashing (Channel switched off, ready to be switched back on, overload
or short-circuit release)
two flashes (Channel switched off, device total current limit 40 A
exceeded)
Connection data
Connection name
Connection method
Stripping length
Conductor cross section solid
Conductor cross section AWG
Conductor cross section, flexible, with ferrule, with plastic sleeve
Conductor cross section flexible, with ferrule without plastic sleeve
Connection name
Main circuit IN+
Push-in connection
15 mm
0.2 mm² ... 10 mm²
24 ... 8
0.25 mm² ... 4 mm²
0.25 mm² ... 6 mm²
Main circuit IN-
10/23/2018 Page 3 / 7
https://www.phoenixcontact.com/pi/products/2908716
Electronic device circuit breaker - CBMC E4 24DC/1-10A NO-
C - 2908716
Technical data
Connection data
Connection method
Stripping length
Conductor cross section solid
Conductor cross section AWG
Conductor cross section, flexible, with ferrule, with plastic sleeve
Conductor cross section flexible, with ferrule without plastic sleeve
Connection name
Connection method
Stripping length
Conductor cross section solid
Conductor cross section AWG
Conductor cross section, flexible, with ferrule, with plastic sleeve
Conductor cross section flexible, with ferrule without plastic sleeve
Push-in connection
10 mm
0.2 mm² ... 2.5 mm²
24 ... 12
0.25 mm² ... 1.5 mm²
0.25 mm² ... 2.5 mm²
Main circuit OUT
Push-in connection
10 mm
0.2 mm² ... 2.5 mm²
24 ... 12
0.25 mm² ... 1.5 mm²
0.25 mm² ... 2.5 mm²
Standards and Regulations
Standards/specifications
EN 61000-6-2
EN 61000-6-3
EN 60068-2-6
EN 60068-2-27
EN 60068-2-78
EN 50178
UL 2367
UL 508
Environmental Product Compliance
REACh SVHC
Lead 7439-92-1
Drawings
10/23/2018 Page 4 / 7
https://www.phoenixcontact.com/pi/products/2908716
Electronic device circuit breaker - CBMC E4 24DC/1-10A NO-
C - 2908716
Diagram
50
Diagram
I [A]
100
10
t
s
1000
40
30
20
10
20
1
30
40
50
60
T [°C]
70
0,1
Max. permissible current in relation to the ambient temperature
0,01
0,5
1
1,2
2
x I
N
Trigger characteristic in the DC range
Dimensional drawing
36
98
Product drawing
1
1
1
1
2
OUT+
2
3
2
4
13
14
3
2
4
13
IN-
90
3
1
2
CBMC
14
2
2
IN+
1
4
CBMC
2
IN+
1
IN-
4
3
1
OUT+
10/23/2018 Page 5 / 7
