EC 1 12DC…
12 V DC electronic circuit breakers
Data sheet
3023_en_B
1
© PHOENIX CONTACT 2014-04-09
Description
The EC 1 12DC… electronic circuit breakers selectively
protect 12 V DC load circuits in hazardous and nonhazardous 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 (IN). 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.
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.
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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
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.
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
Products
Description
Type
Order No.
Pcs. / Pkt.
Electronic circuit breaker, 1 A, 12 V DC, on/off control input and status
output
EC 1 12DC/1A S-C
3000754
1
Electronic circuit breaker, 2 A, 12 V DC, on/off control input and status
output
EC 1 12DC/2A S-C
3000755
1
Electronic circuit breaker, 3 A, 12 V DC, on/off control input and status
output
EC 1 12DC/3A S-C
3000756
1
Electronic circuit breaker, 4 A, 12 V DC, on/off control input and status
output
EC 1 12DC/4A S-C
3000757
1
Electronic circuit breaker, 6 A, 12 V DC, on/off control input and status
output
EC 1 12DC/6A S-C
3000758
1
Electronic circuit breaker, 10 A, 12 V DC, on/off control input and status
output
EC 1 12DC/10A S-C
3000759
1
Electronic circuit breaker, 1 A, 12 V DC, reset input and status output
EC 1 12DC/1A S-R
3000760
1
Electronic circuit breaker, 2 A, 12 V DC, reset input and status output
EC 1 12DC/2A S-R
3000761
1
Electronic circuit breaker, 3 A, 12 V DC, reset input and status output
EC 1 12DC/3A S-R
3000762
1
Electronic circuit breaker, 4 A, 12 V DC, reset input and status output
EC 1 12DC/4A S-R
3000763
1
Electronic circuit breaker, 6 A, 12 V DC, reset input and status output
EC 1 12DC/6A S-R
3000765
1
Electronic circuit breaker, 10 A, 12 V DC, reset input and status output
EC 1 12DC/10A S-R
3000766
1
Accessories
Description
Type
Order No.
Pcs. / Pkt.
Busbar, 500 mm, can be cut to length, gray
FBST 500 TMC-N GY
0901028
10
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Technical data
Data values at TA = 25°C, US = 12 V DC
Operating data
Nominal voltage US
12 V DC
Voltage range
9 … 18 V DC
Nominal current IN
See “Current rating” on page 3
Closed-circuit current I0
When on: 15 … 20 mA typical
Shutdown time, typical
3 s at ILoad > 1.1 x IN
50 ms … 3 s at ILoad >1.8 IN (or 1.5 x IN)
Load circuit
Load output
Power MOSFET switching output (positive switching)
Overload shutdown
Typically 1.1 x IN (1.05 … 1.35 x IN)
Short-circuit current IK
Active current limitation (see “Current rating” on page 3)
Temperature shutdown
Internal temperature monitoring with electronic disconnect
Undervoltage monitoring for load output after each switch-on procedure
With hysteresis at voltage dips
