Countable accessories for SIRIUS 3RV2 motor starter protectors/circuit breakers

Motor starter protector with spring-loaded terminals, size S0 (left) and motor starter protector with screw terminals, size S00 (right)

3RV2 motor starter protectors are compact current-limiting motor starter protectors that have been optimized for load feeders. The motor starter protectors are used for switching and protecting three-phase motors of up to 55/45 kW at 400 V AC and for other loads with rated currents of up to 100 A.

3RV2 motor starter protectors are usually approved according to IEC and UL/CSA. According to UL 508/UL 60947‑4‑1, the 3RV2 motor starter protectors in sizes S00 to S3 are approved as:

• “Manual Motor Controllers”
• “Manual Motor Controllers” for “Group Installations”
• “Manual Motor Controllers Suitable for Tab Conductor Protection in Group Installations”
• “Self-Protected Combination Motor Controller (Type E)”
  Please note that for this approval the 3RV20 motor starter protectors must be equipped with additional infeed terminals or phase barriers. For more information.

Corresponding short-circuit values.

The 3RV2…‑…..‑0BA0 motor starter protectors/circuit breakers can be used at low ambient temperatures down to -50 °C.

3RV20..‑…..‑0DA0 motor starter protectors/circuit breakers for system protection according to IEC, 3RV24..‑…..‑0DA0 for transformer protection according to IEC, and 3RV27 and 3RV28 circuit breakers according to UL 489 can be used for 1-phase, 2-phase and 3-phase loads, as these circuit breakers do not have asymmetry detection.

The 3RV27 and 3RV28 circuit breakers are approved as circuit breakers according to UL 489; they are a special version of the 3RV2 motor starter protectors.

Thanks to their dimensions, the 3RV1011 motor starter protectors are suitable for installation in enclosures or under cramped installation conditions.

Type of construction

The 3RV2 motor starter protectors are available in four sizes:

• Size S00 – width 45 mm,
  max. rated current 16 A,
  at 400 V AC suitable for three-phase motors up to 7.5 kW
• Size S0 – width 45 mm,
  max. rated current 40 A,
  at 400 V AC suitable for three-phase motors up to 18.5 kW
• Size S2 – width 55 mm,
  max. rated current 80 A,
  at 400 V AC suitable for three-phase motors up to 37 kW
• Size S3 – width 70 mm,
  max. rated current 100 A,
  at 400 V AC suitable for three-phase motors up to 45/55 kW

Circuit breakers according to UL 489

The 3RV27 and 3RV28 circuit breakers are available in two or three sizes:

• Size S00 – width 45 mm,
  max. rated current 15 A, for 480 Y/277 V AC
• Size S0 – width 45 mm,
  max. rated current 22 A, for 480 Y/277 V AC
• Size S3 – width 70 mm,
  max. rated current 70 A, for 480 Y/277 V AC

Connection methods

The 3RV2 motor starter protectors/circuit breakers can be supplied with screw terminals and spring-loaded terminals.

Voltage data

The data for 3-phase systems according to IEC 60947-4-1 are valid for the following line system configurations:

Voltage data Ue	Line system configurations
	Three-phase four-wire systems	Three-phase three-wire systems
V	V	V
230	—	230
400	230/400	400
440	260/440	440
500	—	500
690	400/690	690 (only from size S3)
1 000	—	1 000

Use in hazardous areas

The 3RV20 motor starter protectors for motor protection (without 3RV20..‑-…..‑0BA0 and -0DA0) have certification in accordance with both the European explosion protection directive (ATEX) and the international explosion protection standard (IECEx).

In accordance with the European directive (ATEX), the 3RV20 (without 3RV20..‑-…..‑0BA0 and -0DA0) are able to switch and protect explosion-proof motors of type of protection “Increased Safety EEx e”.

In accordance with the international guideline (IECEx), the 3RV20 (without 3RV20..‑-…..‑0BA0 and -0DA0) are able to switch and protect motors of the types “Increased Safety Ex e” or “Flameproof enclosure Ex d”

Circuit protection devices with measuring and communication capabilities

The SIRIUS wireless auxiliary and signaling switch 3RV2921‑5M (3RV2 COM) is available as an accessory for 3RV2 motor starter protectors (sizes S00 to S3). This switch acquires the switching states of the motor starter protector in addition to the number of disconnections. The motor starter protector states are transmitted wirelessly by means of the integrated communication function. The 3RV2 COM wireless auxiliary and signaling switch is a component of SENTRON digitalization solutions.

The SENTRON Powercenter 1000 data transceiver is the core element of this system of communication-capable circuit protection devices. It acquires measured values and status messages from the paired devices and transmits them to higher-level systems.

The data from up to 24 communication-capable devices is transmitted wirelessly to a SENTRON Powercenter 1000, which stores selected data for up to 30 days.

Higher-level systems can access the data via the data transceiver interfaces. Either locally via Bluetooth or via Ethernet in the local network. The Modbus TCP protocol used can easily be integrated by other systems.

Commissioning of the system is easy using the SENTRON Powerconfig PC software or the SENTRON Powerconfig app for mobile devices.

The system of circuit protection devices with communication and measuring function increases system availability as it offers greater transparency through to the branch circuit as well as wireless transmission and storage of measured values.

Article number scheme

Note:

The article number scheme shows an overview of product versions for better understanding of the logic behind the article numbers.

For your orders, please use the article numbers quoted in the selection and ordering data.

Operating conditions

3RV2 motor starter protectors/circuit breakers are suitable for use in any climate. They are intended for use in enclosed rooms in which no harsh operating conditions (such as dust, caustic vapors, hazardous gases) prevail. When installed in dusty and damp areas, suitable enclosures must be provided.

3RV2 motor starter protectors/circuit breakers can optionally be fed from the top or from below.

The permissible ambient temperatures, the maximum switching capacities, the tripping currents and other boundary conditions can be found in the technical specifications and tripping characteristics.

3RV2 motor starter protectors are suitable for operation in IT systems (IT networks). In this case, the different short-circuit breaking capacity in the IT system must be taken into account.

Since operational currents, starting currents and current peaks are different even for motors with identical power ratings due to the inrush current, the motor ratings in the selection tables are only guide values. The specific rated and startup data of the motor to be protected are always paramount to the choice of the most suitable motor starter protector/circuit breaker. This also applies to motor starter protectors for transformer protection.

Possible uses

The 3RV motor starter protectors/circuit breakers can be used:

• For short-circuit protection
• For motor protection (also with overload relay function)
• For system protection
• For short-circuit protection for starter combinations
• For transformer protection
• As main and EMERGENCY OFF switches
• For operation in IT systems (IT networks)
• In hazardous areas (ATEX, IECEx)
• As circuit breakers according to UL 489 (3RV27 and 3RV28)
• For fuse monitoring
• For distance protection