Siemens SENTRON 3VL series User Manual

System Manual
SENTRON
Protection devices
3VL IEC molded case circuit breakers
11/2013Edition
Answers for Infrastructure & Cities.

Siemens SENTRON 3VL series Specifications

General

Rated voltage	Up to 690 V AC
Standards	IEC 60947-2
Rated current	16 A to 1600 A
Protection class	IP20
Mounting type	Fixed mounting
Number of poles	1, 2, 3, 4
Trip unit type	Thermal-magnetic or electronic
Protection functions	Overload, short-circuit
Ambient temperature	-25°C to +60°C

Summary

Configuration

Functional principle

Describes the mechanical design, current limiting, and joint trip units of the circuit breakers.

Functions

Protection functions

Covers overcurrent release, differential current protection, single-pole operation, and ground-fault protection.

Application planning

Use in motor protection

Covers optimal protection and direct starting of three-phase AC squirrel-cage motors.

Installing/mounting

Mounting and safety clearances

Locking devices

Connecting

Cables and busbars

Displays and operator controls

Overcurrent trip unit without LCD display

Overcurrent trip units with LCD display

Parameter assignment / addressing

Setting the parameters

Explains how to set parameters on the ETU, including tripping characteristics.

Service and maintenance

Preventive measures

Outlines inspection intervals and checks for circuit breaker maintenance.

Technical data

Motor Protection

Lists characteristic values for 3VL circuit breakers in motor protection.

Dimensional drawings

VL160X (3VL1), VL160 (3VL2), and VL250 (3VL3), 3- and 4-pole, to 250 A

VL400 (3VL4), 3- and 4-pole, up to 400 A

Circuit diagrams

Circuit diagrams VL1 ... 8 motorized operating mechanism (MO)