L-Series
Circuit Breaker
Available with Current Transformer
The L-Series high performance, compact hydraulic-
magnetic circuit breaker is ideally suited for the rigors and
confined spaces found in today’s telecom/datacom power
distribution units and rack systems. It provides best in class
performance in an innovative low profile, space saving
package complementing the overall spatial objectives
required by telecommunications and data-communications
systems designers in their quest to reduce the overall size
of equipment, while increasing transmission capacity.
The optional current transformer allows outlet metering
and monitoring of power usage thus facilitating load
adjustments and maximizing efficiency.
Further, a patent
pending flush rocker actuator design and optional push-to-
reset guard offers additional protection against accidental
switching.
Number of poles: 1-3. Maximum current and voltage
ratings: .2-32A, 120/240-240VAC. Maximum interrupting
capacity: 5000 Amps
Applications:
Telecom/Datacom Industry
– Power Distribution Units
– Data Servers
– Data Storage
Product Highlights:
Optional current transformer
Ultra low profile design saves valuable space
Optional handle guard actuator
UL 489 LISTED Branch Circuit breaker
Designed for worldwide datacenter
compatibility with up to 240VAC ratings
Carling Technologies, Inc.
60 Johnson Avenue • Plainville, CT 06062
Phone: (860) 793-9281 • Fax: (860) 793-9231
Email: sales@carlingtech.com • www.carlingtech.com
4 | L-Series Circuit Breaker - General Specifications
Electrical
Current Metering
Integrated current transformer.
Measurement range: 1-32 Amps
Voltage output: 10mV per Amp
according to the formula below:
2(Amp) ≤ I ≤ 32(Amp)
V = 0.01× I ± 2%
V V
10
I I
10
V
10
I
10
Environmental
Environmental
Operating Temp
Vibration
MIL-PRF-55629 and MIL-STD-202G
-40ºC to +85 ºC
Withstands 0.06” excursion from
10-55 Hz and 10Gs 55-500 Hz at
rated current per MIL-PRF-55629
and MIL-STD-202G, Method 204D,
Test Condition A. Instantaneous and
ultra-short curves tested at 90% of
rated current.
Withstands 100 Gs, 6 ms saw tooth
while carrying rated current
per MIL-PRF-55629 and MIL-STD-
202G, Method 213B, Test Condition
“I”. Instantaneous and ultra short
curves tested at 90% of rated
current.
MIL-PRF-55629 and MIL-STD-
202G, Method 107G, Condition A
(5-cycles at -55ºC to +25ºC to
+85ºC to +25ºC).
MIL-PRF-55629 and MIL-STD-
202G, Method 106G, i.e., Ten 24-
hour cycles at +25ºC to +65ºC, 80-
98% RH.
Method 101, Condition A (90-95%
RH @ 5% NaCl Solution, 96hrs)
1-3 poles
Screw Terminals with the following
thread sizes: 10-32, 8-32, M5, M4
Standard for 2 & 3 poles
Threaded Insert: #6-32 UNC-2B, or
M3X0.5-6H B ISO (2 per Pole)
Rocker, with or without guard
Series Trip
Housing - Glass Filled Polyester
Rocker – Nylon 6/6
Line/Load Terminals – Copper Alloy;
Bright Acid Tin Plated
~107 Grams (~3.76 Ounces) per pole
Housing - Black, Rocker - Black
0.85%
Shock
Where V=CT output in volts V10=CT
output in volts with I=I10=10 (A);
I=primary current in amperage (50/60
Hz). Phase shift between primary
current and CT output is 0.25±0.25°.
Maximum crest factor of primary current
is 1.73.
R1 shall be integrated in the breaker.
R2 and R3 are provided by end user
and external to the breaker. Connection:
below Load Terminal. 2-pin connector,
Molex 35362-0250. Mating Connector
housing – Molex PN35507-0200.
Dielectric Strength UL, CSA-1960V
50/60 Hz for one minute between all
electrically isolated terminals.
Comply with the 8mm spacing and
3750V 50/60 Hz dielectric requirements
from hazardous voltage to operator
accessible surfaces and between main
circuits of adjacent poles per
Publications EN 60950 and VDE 0805
I
~
(FROM I THOUGH 32 AMPS)
R2=14Ω±I%
RI=28Ω±I%
V
R3=14Ω±I%
I : 1400
CT
V=0,02 X (
I
)
Thermal Shock
Moisture Resistance
Salt Spray
Physical
Number of Poles
Termination
Termination Barrier
Mounting
Actuator
Internal Circuit Config.
Materials
Insulation Resistance
Overload
Interrupt Capacity
Minimum of 100
Megohms@500VDC
50 operations @ 600% of rated
See Table 1
Weight
Standard Color
Mechanical
Endurance
10,000 “On-Off” Operations @ 6 per
minute; 6000 cycles with rated
Current and Voltage; 4000 cycles
without electrical load.
Trips on overload even when
actuator is forcibly held in the “On”
position.
The operating actuator moves
positively to the “Off” position when
an overload causes the breaker to trip
Trip Free
Trip Indication
*Manufacturer reserves the right to change product specification without prior notice.
60 Johnson Avenue • Plainville, CT 06062 • Phone: (860) 793–9281 • Fax: (860) 793–9231
Email: sales
@
carlingtech.com • www.carlingtech.com
DIY/Open Source Hardware
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