SIRIUS 3RV2 motor starter protectors   
4.5 Configuration 
  SIRIUS Innovations 
396  System Manual, 01/2011, A8E56203870002-03 
"Self-protected combination motor controller (type E)" (up to 32 A) 
3RV20 motor starter protector as "Self-Protected Combination Motor Controller (Type E)" 
For approval according to UL 508, a clearance of 1 inch and a creepage distance of 2 inches 
are required on the line side for a "Self-Protected Combination Motor Controller". 
Therefore, 3RV20 motor starter protectors in size S00/S0 are approved according to UL 508 
together with the terminal block (order no. 3RV29 28-1H) or phase barriers (order 
no. 3RV2928-1K). 
CSA approval does not require extended clearances and creepage distances. The terminal 
blocks or phase barriers can, therefore, be omitted for use as a "Self-Protected Combination 
Motor Controller" according to the CSA. 
3RV20 motor starter protectors are approved as "Self-Protected Combination Motor 
Controller" under the following file numbers:  
●  UL File No. E156943, CCN: NKJH. 
●  CSA Master Contract 165071, Product Class: 3211 08. 
4.5.10.2  Approval as "circuit breaker" according to UL 489/CSA C 22.2 No. 5-02 
3RV27 and 3RV28 as "Circuit Breaker"  
These devices are approved as Circuit Breaker according to UL 489 or CSA C22.2 No.5-02 
with 100% rated current ("100 %-rated breaker"). As such they can be used as upstream 
short-circuit protection devices for "Manual Motor Controller" and "Manual Motor Controller 
Suitable for Tap Conductor Protection in Group Installations". 
3RV27 and 3RV28 are approved as "Circuit Breaker" under the following file numbers: 
●  UL File  No. E235044, CCN: DIVQ. 
●  CSA Master Contract 165071, Product Class: 1432 01. 
4.5.11  Application environment 
Introduction 
The following information must be taken into account when planning applications involving 
3RV2 motor starter protectors. 
Installation altitude 
The motor starter protectors are approved for installation altitudes up to 2,000 m. The 
reduced air density at altitudes higher than 2,000 meters affects the motor starter protectors' 
electrical characteristics. The reduction factors which have to be taken into account when 
using motor starter protectors at altitudes higher than 2,000 m can be obtained on request 
on the Internet (http://www.siemens.com/automation/service&support
).