Datasheet > 355200

355200

更新时间： 2024-11-06 14:56:39

品牌	Logo	应用领域
力特 - LITTELFUSE		/
页数	文件大小	规格书
3页	274K
描述
The 355 uses microcontroller technology to monitor incoming voltage and de-energize its output rel

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355200 数据手册

Voltage Monitoring Relays

355 Series

3-Phase Voltage/Phase Monitor

Description

The 355 series is a three-phase voltage monitor with adjustable trip and restart delay, adjustable voltage unbalance, and

multiple diagnostic lights. It is ideal for heavy-duty applications that need both protection and simple user-friendly

diagnostics. Suitable applications include pump panels, commercial HVAC, oil rigs, and many more. The 355 series uses

microcontroller technology to monitor incoming voltage and de-energize its output relay if power problems exist. It can

protect motors from damage caused by single-phasing, high- and low-voltage, phase reversal, and voltage unbalance.

These relays have four diagnostic LEDs that clearly show overvoltage, undervoltage, voltage unbalance, reverse-phase, and

normal conditions. The adjustable trip and restart settings prevent nuisance tripping due to rapidly fluctuating power line

conditions and allow staggered start-up of multiple motors after a fault to prevent a low-voltage condition.

Series 355 models include the 355-200, which is equipped with a heavy-duty 10 A general purpose SPDT relay. The 355-

400 and 355-600 models are equipped with a 470 VA @ 600 V ac pilot duty SPDT relay. A high-voltage (600 V) DPDT relay

output option is available with the 400 V model.

Features & Beneﬁts

FEATURES

BENEFITS

Constantly monitors three-phase voltage to protect against harmful

line conditions even before the motor is started

Proprietary microcontroller-based circuitry

Provides diagnostics that can be used for troubleshooting and to

determine relay status

Advanced LED indication

Prevents nuisance tripping and allows staggered start-up of multiple

motors after a fault to prevent a low-voltage condition

Adjustable trip and restart delay settings

600 V rated relay contacts available on some models

Eliminates the need for a control transformer to step voltage down

to 120–240 V for a control circuit

Applications

• Pump panels

• Commercial HVAC

• Oil rigs

• Heavy-duty applications that need both protection and simple user-friendly diagnostics

Littelfuse.com/355

Speciﬁcations are subject to change without notice.

Revised: 07/13/2023

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355203	LUMBERG	获取价格	RAST-2.5-Steckverbinder, Raster 2,5/5,0 mm
355204	LUMBERG	获取价格	RAST-2.5-Steckverbinder, Raster 2,5/5,0 mm
355204K00	AMPHENOL	获取价格	Board Connector, 4 Contact(s), 1 Row(s), Male, Straight, 0.197 inch Pitch, Solder Terminal
355205	LUMBERG	获取价格	RAST-2.5-Steckverbinder, Raster 2,5/5,0 mm
355205K00	AMPHENOL	获取价格	Board Connector, 5 Contact(s), 1 Row(s), Male, Straight, 0.197 inch Pitch, Solder Terminal

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