3RB2016-1SB0 SIEMENS, 3RB2016-1SB0 Datasheet - Page 5

• Manufacturer Part Number: 3RB2016-1SB0
• Description: RELAY, OVERLOAD, 3-12A
• Manufacturer: SIEMENS

Specifications of 3RB2016-1SB0

• Control Voltage Range: 690V
• Load Current: 12A
• Control Voltage Ac Max: 690VAC
• External Depth: 73mm
• External Length / Height: 64mm
• External Width: 45mm
• Operating Frequency Max: 60Hz
• Operating Frequency Min: 50Hz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Overview
(1) Connection for mounting onto contactors:
(2) Selector switch for manual/automatic RESET and RESET button:
(3) Switch position indicator and TEST function of the wiring:
(4) Solid-state test (device test):
(5) Motor current setting:
(6) Trip class setting/internal ground-fault detection (only 3RB21):
(7) Connecting terminals (removable terminal block for auxiliary circuits):
Optimally adapted in electrical, mechanical and design terms to the
contactors and soft starters, these connecting pins can be used for di-
rect mounting of the overload relays. Stand-alone installation is possi-
ble as an alternative (in some cases in conjunction with a stand-alone
installation module).
With the slide switch you can choose between manual and automatic
RESET. A device set to manual RESET can be reset locally by pressing
the RESET button. On the 3RB21 a solid-state remote RESET is inte-
grated.
Indicates a trip and enables the wiring test.
Enables a test of all important device components and functions.
Setting the device to the motor rated current is easy with the large
rotary knob.
Using the rotary switch you can set the required trip class and activate
the internal ground-fault detection dependent on the start-up condi-
tions.
The generously sized terminals permit connection of two conductors
with different cross-sections for the main and auxiliary circuits. The
auxiliary circuit can be connected with screw connection and alterna-
tively with spring-type connection.
© Siemens AG 2007
The 3RB20 and 3RB21 solid-state overload relays up to 630 A
with internal power supply have been designed for inverse-time
delayed protection of loads with normal and heavy starting
LV 1 T, Function)
overload, phase unbalance or phase failure. An overload, phase
unbalance or phase failure result in an increase of the motor cur-
rent beyond the set motor rated current. This current rise is de-
tected by the current transformers integrated into the devices
and evaluated by corresponding solid-state circuits which then
output a pulse to the auxiliary contacts. The auxiliary contacts
then switch off the load by means of a contactor. The break time
depends on the ratio between the tripping current and set cur-
rent I
characteristic
In addition to inverse-time delayed protection of loads against
excessive temperature rises due to overload, phase unbalance
and phase failure, the 3RB21 solid-state overload relays also al-
low internal ground-fault detection (not possible in conjunction
with wye-delta assemblies). This provides protection of loads
against high-resistance short-circuits due to damage to the insu-
lation material, moisture, condensed water etc.
The "tripped" status is signaled by means of a switch position in-
dicator
ually or automatically after the recovery time has elapsed
LV 1 T,
The devices are manufactured in accordance with environmen-
tal guidelines and contain environmentally friendly and reusable
materials. They comply with all important worldwide standards
and approvals.
Benefits
The most important features and benefits of the 3RB20/3RB21
solid-state overload relays are listed in the overview table
Overload Relays, General
e
and is stored in the form of a long-term stable tripping
Function).
(see LV 1 T,
3RB2 Solid-State Overload Relays
3RB20, 3RB21 for standard applications
(see LV 1 T Characteristic
against excessive temperature rises due to
Function). Resetting takes place either man-
Overload Relays
Data).
Siemens LV 1 · 2007
Curves).
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