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 Grand Elecont Engineering Sdn.Bhd.
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 THERMAL OVERLOAD RELAY - SIEMENS
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SIRIUS 3RU1 and 3RB2 Overload Relay
SIRIUS overload relays, that are avail- able in thermal (3RU1) and electronic versions (3RB2), provide in the main circuit current-dependent overload protection of electronic loads (e.g.
motors) as well as other switching and protective devices in the particular load feeder.
The advantages at a glance:
- Variants reduction due to setting range of 1:4
- Cost reduction due to less power loss
- Solutions for standard/heavy load starting: CLASS 5, 10, 20, 30
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SIRIUS Overload Relays
For standard applications:
- 3RU11 thermal overload relays up to 100 A with tripping CLASS 10
- 3RB20 solid-state overload relays up to 630 A with tripping CLASS 10 or CLASS 20
- 3RB21 solid-state overload relays up to 630 A where tripping CLASSES 5 to 30 can be set and a ground fault detection function that can be enabled
For high-feature applications:
- 3RB22 solid-state overload relays up to 630 A where tripping CLASSES 5 to 30 can be set, a ground fault det
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Siemens Protecting with 3RB22/3RB23
Our modular solid-state 3RB22/3RB23 overload relays – that provide full motor protection – offer the highest level of functionality and protection. These devices not only protect your loads as a function of the current, but also as a function of the temperature because a PTC thermistor
sensor is connected. The PTC sensor directly measures the temperature of the motor windings which is then evaluated by the relay.
The advantages at a glance
- Variants reduction due to
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| Company Name |
Grand Elecont Engineering Sdn.Bhd. |
| Address |
102 & 104, Jalan Tanming Enam Tanming Jaya Industrial Park, 43300 Balakong, Selangor, Malaysia |
| Phone |
-603-89616713 |
| Fax |
-603-89616843 |
| Homepage |
http://www.grandelecont.com.my
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| Contact |
Loong Kent(elecont@pc.jaring.my) |
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