EC 1 12DC…
12 V DC electronic circuit breakers
Data sheet
3023_en_B
1
Description
© PHOENIX CONTACT 2014-04-09
Screw connection technology provides secure and reliable
wire connection.
The integrated current distribution system is another
advantage of the EC 1 12DC… circuit breakers. Wiring can
be implemented easily using available busbar.
The EC 1 12DC… electronic circuit breakers selectively
protect 12 V DC load circuits in hazardous and non-
hazardous environments. A combination of an active
electronic current limit for short circuits and an overload
shutdown ensures that the EC 1 12DC… will quickly react to
an over-current condition in the protected circuit.
Current limitation restricts fault current to 1.5 - 1.8 times the
nominal current rating (I
N
). As a result, the EC 1 12DC… can
prevent the loss of the DC output voltage sometimes
experienced when a faulted circuit triggers a switched-mode
power supply into self-protected output-shutdown mode.
Capacitive loads of up to 75,000 µF can be protected.
The EC 1 12DC… electronic circuit breakers are available
with nominal current ratings from 1 to 10 A. Local status
indication is provided by a multi-color LED, and remote
status indication is available via status output (+12 V = OK).
Manual on/off and reset is accomplished using the
integrated slide switch. Remote reset (EC 1 12DC… S-R)
and remote on/off (EC 1 12DC… S-C) versions are
available.
The EC 1 12DC… can be snapped onto 35 mm mounting
rails (EN 50022) for fast and easy installation. At just
12.5 mm wide, it requires only a small space on the rail.
2
–
–
–
–
–
–
–
–
–
–
–
Features
Selective load protection
Current limitation on overload/short circuits
Protection for capacitive circuits up to 75,000 µF
Current ratings from 1 to 10 A
Manual on/off/reset slide switch
Electronic reset option
Electronic on/off option
12.5 mm width for minimal rail footprint
Bridging available for line (+) and return (-)
Remote status indication (+12 V = OK)
Multi-color status LEDs
This equipment is suitable for use in Class I, Division 2, Groups A, B, C, D or non-hazardous locations only.
Make sure you always use the latest documentation.
It can be downloaded at
phoenixcontact.com.
This data sheet is valid for all products listed on the following page:
EC 1 12DC…
3
Ordering data
Type
EC 1 12DC/1A S-C
EC 1 12DC/2A S-C
EC 1 12DC/3A S-C
EC 1 12DC/4A S-C
EC 1 12DC/6A S-C
EC 1 12DC/10A S-C
EC 1 12DC/1A S-R
EC 1 12DC/2A S-R
EC 1 12DC/3A S-R
EC 1 12DC/4A S-R
EC 1 12DC/6A S-R
EC 1 12DC/10A S-R
Products
Description
Electronic circuit breaker,
1 A, 12 V DC, on/off control input and status
output
Electronic circuit breaker,
2 A, 12 V DC, on/off control input and status
output
Electronic circuit breaker,
3 A, 12 V DC, on/off control input and status
output
Electronic circuit breaker,
4 A, 12 V DC, on/off control input and status
output
Electronic circuit breaker,
6 A, 12 V DC, on/off control input and status
output
Electronic circuit breaker,
10 A, 12 V DC, on/off control input and status
output
Electronic circuit breaker,
1 A, 12 V DC, reset input and status output
Electronic circuit breaker,
2 A, 12 V DC, reset input and status output
Electronic circuit breaker,
3 A, 12 V DC, reset input and status output
Electronic circuit breaker,
4 A, 12 V DC, reset input and status output
Electronic circuit breaker,
6 A, 12 V DC, reset input and status output
Electronic circuit breaker,
10 A, 12 V DC, reset input and status output
Order No.
3000754
3000755
3000756
3000757
3000758
3000759
3000760
3000761
3000762
3000763
3000765
3000766
Pcs. / Pkt.
1
1
1
1
1
1
1
1
1
1
1
1
Accessories
Description
Busbar,
500 mm, can be cut to length, gray
Type
FBST 500 TMC-N GY
Order No.
0901028
Pcs. / Pkt.
10
4
Technical data
Data values at T
A
= 25°C, U
S
= 12 V DC
Operating data
Nominal voltage U
S
Voltage range
Nominal current I
N
Closed-circuit current I
0
Shutdown time, typical
12 V DC
9 … 18 V DC
See “Current rating” on page 3
When on: 15 … 20 mA typical
3 s at I
Load
> 1.1 x I
N
50 ms … 3 s at I
Load
>1.8 I
N
(or 1.5 x I
N
)
Load circuit
Load output
Overload shutdown
Short-circuit current I
K
Temperature shutdown
Undervoltage monitoring for load output after each switch-on procedure
Switch-on delay t
Start
(typical)
Free running circuit
Parallel connection of multiple load outputs
Power MOSFET switching output (positive switching)
Typically 1.1 x I
N
(1.05 … 1.35 x I
N
)
Active current limitation (see “Current rating” on page 3)
Internal temperature monitoring with electronic disconnect
With hysteresis at voltage dips <500 ms, no reset required:
load “off” at U
B
< 3.2 V
10 ms
External free-wheeling diode recommended for inductive load
Not permitted
3023_en_B
PHOENIX CONTACT
2
EC 1 12DC…
Connection data
Line+/Load+/0 V
Thread size
Conductor size
1 solid or stranded conductor
2 solid or stranded conductors with same cross-section
2 stranded conductors with TWIN ferrule
Stripping length
Tightening torque
Signal connections
Thread size
Stranded conductor size with ferrule
Stripping length
Tightening torque
M3
0.25 … 2.5 mm²
8 mm
0.5 … 0.6 Nm
0.5 … 10 mm² with or without ferrule
0.5 … 4 mm² without ferrule; 0.5 … 2.5 mm² with ferrule
0.5 … 6 mm²
10 mm
1.5 … 1.8 Nm
M4
General data
Mounting
Degree of protection
Temperature range, operation
Ordinary location
Hazardous location (Class I, Div. 2)
Temperature range, storage
Weight
-20 … 60°C
0 … 25°C
-20 … 70°C
65 g
DIN rail in acc. with EN 50072 (NS 35 x 7.5)
IP20
Status and control
Status LED
Green:
power applied
Orange:
overload or short circuit leading to electronic shutdown condition
Red:
electronically disconnected; low voltage (<3.25 V); load circuit/power-
MOSFET off
Off:
under voltage or no power; manually switched off
Pin 3
–
–
Pin 21/22
Pin 23
Active current limitation
10000 cycles
Terminals
Gnd (–)
NC signal contacts
NO signal contacts
Remote control/reset
Status output
Switching capacity I
CN
Expected life with 1 x I
N
Current rating
Current rating, I
N
(A)
Voltage drop, typical, at I
N
(mV)
Active current limitation, typical
Maximum load current at 40°C at 100% duty cycle (A)
Maximum load current at 50°C at 100% duty cycle (A)
1
80
1.8 x I
N
1
1
2
130
1.8 x I
N
2
2
3
80
1.8 x I
N
3
3
4
100
1.8 x I
N
4
4
6
130
1.8 x I
N
6
5
10
150
1.5 x I
N
10
9
Approval/conformance
Vibration
Conformance with EMC Directive 2004/108/EC
Insulation coordination (IEC 60934)
3g tested in acc. with IEC 60068-2-6, test Fc
Noise emission: EN 61000-6-3
Noise susceptibility: EN 61000-6-2
0.5 kV/2 pollution degree 2, increased insulation in actuation area
3023_en_B
PHOENIX CONTACT
3
EC 1 12DC…
Approval/conformance
Dielectric strength
Insulation resistance (off state)
Approvals
18 V DC maximum (load circuit)
None (electronic shutdown only)
c
A
Solid state overcurrent protector (UL 2367)
A
Class I, Division 2, Groups A,B,C,D T5 (UL 1604)
Voltage drop, current limitation, maximum load current
Nominal current I
N
1A
2A
3A
4A
6A
10 A
Voltage drop U
ON
at I
N
(typical)
80 mV
130 mV
80 mV
100 mV
130 mV
150 mV
Active current limitation
(typical)
1.8 x I
N
1.8 x I
N
1.8 x I
N
1.8 x I
N
1.8 x I
N
1.5 x I
N
Maximum load current at 100% on duty
T
A
= 40°C
1A
2A
3A
4A
6A
10 A
T
A
= 50°C
1A
2A
3A
4A
5A
9A
When mounted side-by-side without airflow between the electronic circuit breakers, current load should be
reduced to 80% of rated load when operating at a 100% duty cycle.
Line +
(12 V DC)
Failsafe
ECU
R
sense
Figure 1
3023_en_B
12.5 mm
0.492 in.
80 mm
3.15 in.
80 mm
3.15 in.
S1
(on/off)
Status indication:
green/orange/red
RE
(reset input)
SF
(status output)
83 mm
3.27 in.
Load +
(load output)
0V
Figure 2
Circuit diagram
Dimensions
PHOENIX CONTACT
4
EC 1 12DC…
5
5.1
Operating characteristics
Information required for UL approval
WARNING:
Exposure to some chemicals may degrade the
sealing properties of materials used in EC 1
12DC…. These products use the following
materials:
Sealing material:
– Generic name: Modified diglycidyl ether
of bisphenol A
– Supplier: Fine Polymers Corporation
– Type: Epi Fine 4616L-160PK
Casing material:
– Generic name: Liquid crystal polymer
– Supplier: Sumitomo Chemical
– Type: E4008, E4009 or E6008
5.2
Time/current characteristics
The trip time is typically 3 s in the range between 1.1 and
1.8 x I
N1
.
Electronic current limitation typically occurs at 1.8 x I
N
which
means that, under all overload conditions (independent of
the power supply and the resistance of the load circuit), the
maximum overload before disconnection will not exceed
1.8 x I
N
times the current rating. Trip time is between 100 ms
and 3 s (depending on overload or at short circuit).
Without this current limitation, a considerably higher
overload current would flow in the event of an overload or
short circuit.
Disconnection (typical)
1.1 x I
N
1.8 x I
N
10000
1000
100
trip time in seconds
Periodically inspect the EC 1 12DC… for any degradation of
properties and replace if degradation is found.
WARNING: Explosion hazard
Do not disconnect equipment unless power has
been removed or the area is known to be non-
hazardous.
Substitution of any components may impair
suitability for hazardous locations.
10
5
1
0. 1
0.01
0
current limitation
typically 1.8 x I
N
1
2
3
4
I
K
5
...times rated current
Figure 4
Time/current characteristic curve
Electronic Circuit Protector
EC-E, EC-E1, EC-E4, EC1
UL1604
This device is suitable for use in Class I, Div 2, Groups A, B, C, D;
TC T5; UL File# E324415
Warnings:
1. Remove power before disconnecting device.
2. Components substitutions may impair suitability of Class I, Div 2.
3. Chemical exposure may degrade internal relay's sealing property
in the EC-E1 and EC-E4 products only.
UL2367
Non-hazardous use - UL File# E317172
Refer to data sheet / installation guidelines for installation
and safety instructions.
PHOENIX CONTACT GmbH & Co.KG
Flachsmarktstraße 8
32825 Blomberg . Germany
Phone +49-(0)5235-3-00
Fax
+49-(0)5235-3-4 1200
Figure 3
UL-approved package slip
1
Current limitation is typically 1.8 x I
N
times rated current
at I
N
= 0.5 A to 6 A
Current limitation is typically 1.5 x I
N
times rated current at I
N
= 8 A or
10 A
3023_en_B
PHOENIX CONTACT
5
京公网安备 11010802033920号
EEWORLD
