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nrgSMART 600A Load Center panels are available with dual-feed 10/10 or single-feed 20 circuit breaker positions to accommodate bullet-style breakers or fuse holders. The panels feature -48V operating voltage to fit in legacy and “next-gen” network applications, with advanced circuit level monitoring features engineered into a compact 2RU footprint.

 Voltage range, nominal voltage -40V to -60V (Nominal -48V)
Maximum input load rating 600A per feed
Short circuit withstand rating 5000A
Nominal power loss at full load Less than 7W per side @ 28,000W
full load (600A x 48V)
Percentage of full power dissipation at nominal voltage Less than 1%
Max. input interrupt device 750A
 Input terminal studs (with nuts, flat washers and
spring washers) for dual-hole compression lugs
 – Two pair of 3/8-16 studs on 1-in. centers per terminal
[max. lug width of 1.94-in. (49.2 mm)] per pair
– Torque nut (using 9/16-in. or 15 mm wrench) to 150-in.-lb. (~17N•m), max.
 Input wire size #1 AWG to 750MCM
 Max. output circuit breaker Single-pole:  100A
Double-pole:  175A
Triple-pole:  250A
 Max. output load (ea.) – continuous Single-pole:  80A
Double-pole:  140A
Triple-pole:  200A
 Minimum short circuit interrupt rating 5000A
 Max. total output load 550A per side
 Output terminal studs (with KEPS, nuts, and washers)
for dual-hole compression lugs
 – 1/4-20 studs on 5/8-in. centers [max. lug width of 0.625-in. (15.8 mm) for a BATT terminal
and 0.70-in. (17.7 mm) for a RTN terminal]
– Torque bolts (using 7/16-in. or 12 mm wrench) to 50-in.-lb. (5.5 N•m), max.
 Output wire size – #10 AWG (min.) for a 25A single-pole interrupter to #2 AWG (min.) for a 100A single-pole interrupter
– #2 AWG (min.) for double-pole interrupters from 100A to 175A
– 2/0 AWG (min.) for triple-pole interrupters
Circuit breakers* AIRPAX®-style LEL or
Carling-style CA1**
 * Telect suggests you avoid using different types of circuit breakers in the same load center.  Alarm contacts may vary among interrupter manufacturers and may incapacitate the alarm system.
** Circuit breakers for this load center are designed and manufactured by Airpax Corporation and Carling Industries to meet Telect’s symmetrical pin
specifications.  Order circuit breakers only from Telect.
 Earth GND terminal bolts (with washers) for dual-hole compression lugs  – Two pair of 1/4-20 threaded holes on 5/8 in. centers.

 – Torque bolts (using 7/16 in. or 12 mm wrench) to 50 in.-lb. (5.5 N•m), max.
 Input wire size  #2 AWG (min.) for any input interrupt device 400A or more
 Alarm wire size  #24 AWG, typical (#26 to #20 AWG)
 Alarm terminals  Wire wrap
 Relay contact ratings  Dry Form-C contacts (1A @ 30 VDC; 0.5A @ 60 VDC, 0.3A @ 125 VAC)
 Max. alarm power rating  @24V: 72 mA (1.73W)
@48V: 147 mA (7.06W)
 Voltage Sensor
 Sensor accuracy  0 to -19.99V:  ±0.3V
-20V to -60V: ±0.1V
 Voltage measurement range  0 to -60 VDC
 Feed voltage detection  0 to -19.99V: Alarm
-20V to -60V: Normal

– Voltage measurement may be slightly different than at input terminal blocks due to the voltage drop within the panel.
– Sensors are factory calibrated and do not require user adjustment.
 nrgNET sensor and alarm card power  -48 VDC nominal
 nrgNET data communication  RS-485
 nrgNET connector  Removable 5-pin connector with screw down terminals
 nrgNET connector functions  nrgNET IN from the nrgCONTROL or nrgSMART panel,
nrgNET OUT to next in-line nrgSMART panel
 Supported protocols  Proprietary nrgNET used to communicate between panels and controller
 Fit and Finish
 Material  Cold-rolled steel
 Color  Pewter grey powder coat
 Dimensions (L x W x H)  19″ L x 15″ W x 3.5″ H  (483 mm x 381 mm x 88 mm)
 Rack space  2RU
 Weight, without packaging and accessories  18 lbs. (8.2kg)
 Weight, shipping  25 lbs. (11kg)
 Operating temperature  -10°C (14°F) to 44°C (127°F)
 Humidity  90% and non-condensing


  • Individual circuit level monitoring
  • High accuracy, 100% passive monitoring, modular sensor modules
  • Collect feed voltage, circuit current, and temperature
  • Network data collection via SNMP interface
  • User configurable thresholds for warnings

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