3RB2056-2FC2-ZX95
OVERLOAD RELAY 50...200 A

From SIEMENS

Overload relay 50...200 A for motor protection Size S6, Class 20E Contactor mounting/stand-alone installation Main circuit: busbar connection Auxiliary circuit: Screw terminal Manual-Automatic-Reset Pack = 15 units
Product brand nameSIRIUS
Product designationsolid-state overload relay
Product type designation3RB2
General technical data
Size of overload relayS6
Size of contactor can be combined company-specificS6
Insulation voltage with degree of pollution 3 rated value1 000 V
Surge voltage resistance rated value8 kV
maximum permissible voltage for safe isolation
in networks with grounded star point between auxiliary and auxiliary circuit300 V
in networks with grounded star point between auxiliary and auxiliary circuit300 V
in networks with grounded star point between main and auxiliary circuit600 V
in networks with grounded star point between main and auxiliary circuit690 V
Protection class IP
on the frontIP20
of the terminalIP00
Shock resistance15g / 11 ms
acc. to IEC 60068-2-2715g / 11 ms
Thermal current200 A
Recovery time
after overload trip with automatic reset typical3 min
after overload trip with remote-reset0 min
after overload trip with manual reset0 min
Type of protectionII (2) G [Ex e] [Ex d] [Ex px] II (2) D [Ex t] [Ex p]
Certificate of suitability relating to ATEXPTB 06 ATEX 3001
Protection against electrical shockFinger-safe with terminal covers for vertical contact from the front
Reference code acc. to DIN EN 81346-2F
Ambient conditions
Installation altitude at height above sea level
maximum2 000 m
Ambient temperature
during operation-25 ... +60 °C
during storage-40 ... +80 °C
during transport-40 ... +80 °C
Temperature compensation-25 ... +60 °C
Relative humidity during operation10 ... 95 %
Main circuit
Number of poles for main current circuit3
Adjustable pick-up value current of the current-dependent overload release50 ... 200 A
Operating voltage
rated value1 000 V
at AC-3 rated value maximum1 000 V
Operating frequency rated value50 ... 60 Hz
Operating current rated value200 A
Operating power
for three-phase motors at 400 V at 50 Hz30 ... 90 kW
for AC motors at 500 V at 50 Hz30 ... 132 kW
for AC motors at 690 V at 50 Hz55 ... 160 kW
Auxiliary circuit
Design of the auxiliary switchintegrated
Number of NC contacts for auxiliary contacts1
Notefor contactor disconnection
Number of NO contacts for auxiliary contacts1
Notefor message "tripped"
Number of CO contacts
for auxiliary contacts0
Operating current of auxiliary contacts at AC-15
at 24 V4 A
at 110 V4 A
at 120 V4 A
at 125 V4 A
at 230 V3 A
Operating current of auxiliary contacts at DC-13
at 24 V2 A
at 60 V0.55 A
at 110 V0.3 A
at 125 V0.3 A
at 220 V0.11 A
Protective and monitoring functions
Trip classCLASS 20E
Design of the overload releaseelectronic
UL/CSA ratings
Full-load current (FLA) for three-phase AC motor
at 480 V rated value200 A
at 600 V rated value200 A
Contact rating of auxiliary contacts according to ULB600 / R300
Short-circuit protection
Design of the fuse link
for short-circuit protection of the main circuit
— with type of coordination 1 requiredgG: 355 A, Class L: 601 A
— with type of assignment 2 requiredgG: 315 A
for short-circuit protection of the auxiliary switch requiredfuse gL/gG: 6 A
Installation/ mounting/ dimensions
Mounting positionany
Mounting typeMounting contactor / stand-alone assembly
Height119 mm
Width120 mm
Depth155 mm
Required spacing
with side-by-side mounting
— forwards0 mm
— Backwards0 mm
— upwards0 mm
— downwards0 mm
— at the side0 mm
for grounded parts
— forwards0 mm
— Backwards0 mm
— upwards0 mm
— at the side6 mm
— downwards0 mm
for live parts
— forwards0 mm
— Backwards0 mm
— upwards0 mm
— downwards0 mm
— at the side6 mm
Connections/Terminals
Product function
removable terminal for auxiliary and control circuitYes
Type of electrical connection
for main current circuitbusbar connection
for auxiliary and control current circuitscrew-type terminals
Arrangement of electrical connectors for main current circuitTop and bottom
Type of connectable conductor cross-sections
for auxiliary contacts
— solid1x (0.5 ... 4 mm²), 2x (0.5 ... 2.5 mm²)
— single or multi-stranded1x (0,5 ... 4 mm²), 2x (0,5 ... 2,5 mm²)
— finely stranded with core end processing1x (0.5 ... 2.5 mm²), 2x (0.5 ... 1.5 mm²)
at AWG conductors for auxiliary contacts2x (20 ... 14)
Tightening torque
for main contacts with screw-type terminals10 ... 12 N·m
for auxiliary contacts with screw-type terminals0.8 ... 1.2 N·m
Design of the thread of the connection screw
for main contactsM8
of the auxiliary and control contactsM3
Communication/ Protocol
Type of voltage supply via input/output link masterNo
Electromagnetic compatibility
Conducted interference
due to burst acc. to IEC 61000-4-42 kV (power ports), 1 kV (signal ports) corresponds to degree of severity 3
due to conductor-earth surge acc. to IEC 61000-4-52 kV (line to earth) corresponds to degree of severity 3
due to conductor-conductor surge acc. to IEC 61000-4-51 kV (line to line) corresponds to degree of severity 3
due to high-frequency radiation acc. to IEC 61000-4-610 V in frequency range 0.15 to 80 MHz, modulation 80 % AM with 1 kHz
Field-bound parasitic coupling acc. to IEC 61000-4-310 V/m
Electrostatic discharge acc. to IEC 61000-4-26 kV contact discharge / 8 kV air discharge
Display
Display version
for switching statusSlide switch

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