Overview

The following illustration shows 3RV2 motor starter protectors/circuit breakers with the accessories that can be mounted for sizes S00 to S3.

For an overview of the 3RV2 motor starter protectors, see the following PDF at the end of the topic.

Mountable accessories for SIRIUS 3RV2 motor starter protectors

SIRIUS motor starter protector with spring-type terminals, size S0 (left) and SIRIUS 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 induction motors of up to 55/45 kW at 400 V AC and for other loads with rated currents of up to 100 A.

The new 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/circuit breakers 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 further information see "Accessories".

For corresponding short-circuit values, see Manual "SIRIUS Innovations – SIRIUS 3RV2 Motor Starter Protectors", https://support.industry.siemens.com/cs/ww/en/view/60279172.

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

Type of construction

The 3RV2 motor starter protectors/circuit breakers are available in three 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 acc. to UL 489

The 3RV27 and 3RV28 circuit breakers are available in two 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-type terminals.

Use in hazardous areas

The 3RV20 motor starter protectors for motor protection in sizes S00, S0, S2 and S3 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 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 are able to switch and protect motors of the types "Increased Safety Ex e" or "Flameproof enclosure Ex d"

Article No. scheme

Note:

The Article No. 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.