Datasheet > 77C

77C

更新时间： 2024-11-21 14:56:27

品牌	Logo	应用领域
力特 - LITTELFUSE		/
页数	文件大小	规格书
4页	393K
描述
The 77C single-phase relay provides motor protection with input voltage from 100–240 V ac and motor full load ampere range as follows: 2–25 A (looped conductors required); 26–90 A (direct); 91–800 A (external CTs required).

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77C 数据手册

Motor and Pump Protection Relays

77C Series

Single-Phase Current & Voltage Monitor

Description

The single-phase 77C unit is a fully-programmable, electronic overload relay designed to protect any motor drawing 2-800

full load A (external CTs are required above 90 A). Common applications include conveyor systems, HVAC equipment,

saws and grinders, fan motors, and almost any pumping application. The 77C and 777-HVR-SP (family of products) are

for single-phase 100-240 V ac applications.

All of the overload relays provide unsurpassed protection by combining overload, underload, and voltage in one unit.

For standalone applications, the units incorporate a 3-digit LED display that is used for programming, providing real-time

operational information, and displaying diagnostic codes to aid in troubleshooting a fault condition. These units also feature

a communications network port that can be used with communication modules, listed in the 777 accessories section, to

form a Modbus, DeviceNet^™, Profibus, or Ethernet network. Up to 99 units can be remotely monitored and controlled from

a PC, PLC, or SCADA system, and data logging through a PC with the optional Solutions software. This capability allows

for a simple, cost-effective way to meet new requirements for arc-flash safety.

*Subtrol and DeviceNet are trademarks of their respective owners.

Features & Beneﬁts

FEATURES

BENEFITS

Visual indication for programming, viewing real-time voltage or

current, and last fault code

Built-in display

Programmable voltage and current settings

3 selectable restart options

Allows usage on a wide range of systems

Choose from automatic, semi-automatic, or manual to best meet

individual application needs

Program separate restart delay time for rapid cycle protection, motor

cool down, and dry-well recovery

3 programmable restart delay timers

Remote display compatibility

Flexible reset

Increases safety through remote display of real-time data and fault

history. Aids with arc-flash safety regulations

Reset can be done through pushbutton on relay or remotely with

optional 777-MRSW or OL-Reset remote reset kit

Applications

• Conveyor systems

• HVAC equipment

• Saws and grinders

• Fan motors

Littelfuse.com/77C

Speciﬁcations are subject to change without notice.

1 of 4

Revised: 09/30/2022

12 3 4

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与77C相关器件

型号	品牌	获取价格	描述	数据表
77C-KW/HP	LITTELFUSE	获取价格	77C-KW/HP单相电流和电压监控器提供100-240V交流电压保护和2-90A电机满载
77C-LR	LITTELFUSE	获取价格	The 77C-LR single-phase relay provides motor
77C-LR-KW/HP	LITTELFUSE	获取价格	77C-LR-KW/HP单相电流和电压监控器提供100-240V交流电压保护和1-9A电机
77D2-SERIES	ETC	获取价格	Optoelectronic
77D3-SERIES	ETC	获取价格	Optoelectronic
77D5-SERIES	ETC	获取价格	Optoelectronic
77D6-SERIES	ETC	获取价格	Optoelectronic
77D8-SERIES	ETC	获取价格	Optoelectronic
77DA15P1APNVF2	AMPHENOL	获取价格	CONNECTOR,D-SHELL,PCB MNT,RECEPT,15 CONTACTS,PIN,0.108 PITCH,R ANGLE PC TAIL TERMINAL,HOLE
77D-A-15-P-1ATN	AMPHENOL	获取价格	D Type Connector, 15 Contact(s), Male, 0.109 inch Pitch, Solder Terminal, Hole .112-.124,

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