DC Earth Fault Relay
SE 601 Series
- Microprocessor-based earth-fault relay for unearthed dc systems
- Ten settings provide a wide range of low-level protection
- Sensitive earth-fault protection without the problems associated with nuisance tripping
Description
The Littelfuse SE-601 is a microprocessor-based earth leakage relay for unearthed dc systems.
This overcurrent and earth fault protection relay provides sensitive earth-fault protection without the problems associated with nuisance tripping. Earth-fault current is sensed using an SE-GRM Series Earth-Reference Module – a resistor network that limits earth-fault current to 25 mA. The SE-601 is used on unearthed dc systems ranging from industrial 24-Vdc control circuits to 1000-Vdc solar and transportation systems.
Note: Littelfuse earth fault protection products may also be known as ground fault products.
We are the exclusive NSW supplier of Littelfuse protection relays and controls for the protection, safe control and distribution of electrical power in industrial applications.
Adjustable pickup (1-20 mA)
Ten settings provide a wide range of low-level protection.
Adjustable time delay (50 ms-2.5 s)
Adjustable trip delay allows quick protection or delayed response.
Output contacts
Form A and Form B output contacts for operation of separate annunciation and trip circuits.
Analog output (0-5 V)
Provides means for connecting to a meter (PGA-0500) or a control system.
Non-volatile trip memory
Retains trip state when de-energised to simplify troubleshooting.
Selectable contact operating mode
Selectable fail-safe or non-fail-safe operating modes allow connection to shunt or undervoltage breaker coil.
Microprocessor based
No calibration required saves on maintenance cost.
SE-601 Manual
SE-601 ManualSE-601 Data Sheet
CAD Drawings and Models
SE-601 3D ModelSE-601 CAD DrawingSE-GRM500 3D ModelSE-GRM 010-125 SE GRM 500
IEEE Device Numbers
DC Overcurrent Relay (76G)
Input Voltage
See ordering information
Trip Level Settings
1-20 mA
Trip Time Settings
0.05 -2.5 s
Output Contacts
Isolated Form A and Form B
Contact Operating Mode
Selectable fail-safe or non-fail-safe
Test Button
Local
Reset Button
Local and remote
Analog Output
0-5 V
Conformally Coated
Consult factory
Dimensions
H 75 mm; W 55 mm; D 115 mm
Approvals
C-Tick
Warranty
5 years
Mounting
DIN, Surface (standard) Panel (with PMA-55 or PMA-60 adapter)
