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Tripping current: 250 A
Motor protection is one of the central tasks of the electrical equipment of any machine. The electronically configurable ZEB electronic motor protection relays of the Eaton Moeller series ...
Trigger voltage: 100 V - 240 V
... Series arc-flash relay is a cost-effective solution that reduces arc-fault damage by detecting the light from an arc flash and rapidly tripping. Two remote light sensors can be connected to one relay ...
Littelfuse
Trigger voltage: 110, 250, 100, 240 V
The AF0500 is a microprocessor-based arc-flash protection relay that limits arc-fault damage by detecting the light from an arc flash and rapidly tripping the feeder breaker. The unit is well suited for ...
Littelfuse
Trigger voltage: 12, 48, 120, 240 V
... -8800 is a microprocessor-based relay that limits arc-fault damage by detecting the light from an arc flash and rapidly tripping. Phase-current-transformer inputs are provided for current-constrained arc-flash protection ...
Littelfuse
OC&EF Protection Relay (self-powered + auxiliary power supply). - Self-powered with operating current through 3 standard current transformers /5 or /1, to obtain current measurements. Universal 24-230 ...
FANOX ELECTRONIC
Tripping current: 1 A - 5 A
Trigger voltage: 24 V - 230 V
SIR-A Overhead Control / RTU & Feeder Protection The Fanox SIR-A is the Relay that offers the complete solution for Recloser Control and Feeder Protection with current, voltage, ...
FANOX ELECTRONIC
Trigger voltage: 120, 230 V
... is composed of multirange electric modular relays. It is specifically designed for direct pulse currents. Its delay time and sensitivity can be adjusted, with near-immunity to external interruptions. The relay ...
FANOX ELECTRONIC
Tripping current: 15 A
... 3CR series current type motor starting relay is designed for single-phase AC applications with motor start winding currents up to 15 Amps. It is applicable on both split phase and capacitor start motors. The 3CR relay ...
Tripping current: 25 A
KLIXON® 4CR current type motor starting relay is a compact, high capacity relay, designed for universal application to split phase and capacitor start, single-phase motors with start-winding currents ...
WG series electronic differential protection relay for connection to external WG / WGS / WGC series toroidal transformers These are highly reliable electronic relays with the option ...
CIRCUTOR
Electronic earth leakage protection relay, used to connect to the earth leakage transformers WG / WGC Series These electronic relays offer a high reliability, with the option of a ...
CIRCUTOR
Tripping current: 0.03 A - 30 A
Unit equivalent to 4 earth leakage protection networks. 4 independent programmable relays available Four inputs to connect the external toroidal transformers of the WG Superimmunized Type A relay ...
CIRCUTOR
Tripping current: 2 A
Trigger voltage: 19 V - 29 V
The safety relay / safety switching devices from di-soric make simple integration of individual safety sensors into occupational safety solutions possible. ...
di-soric
Trigger voltage: 80 V - 230 V
The contact protection relay BA 7961 protects sensitive control contacts of e.g. digital plc outputs, limit contacts on measuring devices, low load reed contacts against early wearing. It has a low input ...
Tripping current: 20 mA
Trigger voltage: 24 V
... start with automatic start or a start button • Monitoring of downstream relays or contactors. • Simultaneity monitoring to monitor safety components over time • Relay start using a ...
Tripping current: 0 A - 0.4 A
Trigger voltage: 24 V
... • 4 test outputs for monitoring for short circuits and overload states • 2 monitoring outputs programmed via the EUCHNER Safety Designer software • Scope of delivery • The expansion plug (order no. 121308) is ...
COMBI-6 Type A & F MULTI-CHANNEL EARTH LEAKAGE RELAY The Multichannel earth leakage relays COMBI 6 have been designed for the monitoring and protection of up to 6 independent systems. ...
FRER
The X...DB3 series earth leakage relays Type B are designed to measure the DC, AC and high frequency leakage current. Thanks to their distinctive feature (the displaying of the leakage current) it is possible to continuously ...
FRER
The X...DB3 series earth leakage relays Type B are designed to measure the DC, AC and high frequency leakage current. Thanks to their distinctive feature (the displaying of the leakage current) it is possible to continuously ...
FRER
Trigger voltage: 85 V - 265 V
... detection relay is a versatile and independently operating device for bay based protection. It supports 4-channels arc signal detection and can configuration multiple arc tripping modes, ensuring accurate ...
Chongqing Blue Jay Technology Co. Ltd
AFR-3S Arc flash relays are mainly used to detect arc faults in electrical systems and protect equipment and personnel in electrical systems from arc faults. The arc flash protection relay ...
Chongqing Blue Jay Technology Co. Ltd
Tripping current: 5 A
Trigger voltage: 220 V
... detection, the AFR-M offers exceptional protection capabilities, helping to minimize arc flash damage for personnel and equipment. High-Speed Tripping for arc flash protection The AFR-M arc flash ...
Chongqing Blue Jay Technology Co. Ltd
Tripping current: 5 A
Trigger voltage: 24 V
... power overvoltage protection, anti-reverse protection • Safety input : Double NPN normally closed input (ESRN type), double PNP normally closed input (ESRP type); Dual door or emergency ...
Tripping current: 6 A - 10 A
Trigger voltage: 24 V
... accordance with ISO13849-1(Category4, PLe); 2. Relay output: 2 normally open contacts; 3. Transistor output: 4 PNP signal output; 4. Self-diagnose and redundant circuit design; 5. Support a variety of safety ...
They are devices used to protect motors and systems against neutral breakage, phase absence, high voltage, low voltage and phase sequence errors.
These are the devices used to prevent the motors from being damaged by overheating due to the lack of phase or voltage imbalance and to prevent the problems that may arise from the phase sequence error. There are different models working ...
Tripping current: 0.03 A - 30 A
Trigger voltage: 48 V - 400 V
... Din modules Dossena presents the DER4B range, the new generation of type B differential toroid relays. DER4B is recommended for electrical protection in the tertiary sector, where devices that generate ...
DOSSENA
Tripping current: 0.03 A - 30 A
Trigger voltage: 48 V - 400 V
... Recessed 96x96mm Dossena presents the DER3B range, the new generation of type B differential toroid relays. DER3B is recommended for electrical protection in the tertiary sector, where devices that ...
DOSSENA
Tripping current: 0.03 A - 30 A
Trigger voltage: 48 V - 400 V
The residual current relays of the DER4 Dossena range can be used on LV networks in alternating current of the TT and TN type. They make it possible to achieve adequate selectivity and residual current protection ...
DOSSENA
Tripping current: 14 A - 35 A
... important to prevent the motor from overheating, or thermal overload. IMO Thermal Overload Relays offer electromechanical protection for main circuits and reliable protection for motors ...
IMO Precision Controls Limited
Tripping current: 20 A - 48 A
... important to prevent the motor from overheating, or thermal overload. IMO Thermal Overload Relays offer electromechanical protection for main circuits and reliable protection for motors ...
IMO Precision Controls Limited
Tripping current: 0.12 A - 0.18 A
... important to prevent the motor from overheating, or thermal overload. IMO Thermal Overload Relays offer electromechanical protection for main circuits and reliable protection for motors ...
IMO Precision Controls Limited
Tripping current: 16 A
Trigger voltage: 250 V
... switches. While "normal" relays are monostable, i.e. they return to the idle state when the excitation is switched off, remanence relays are bistable, i.e. the current switching state is retained irrespective ...
Releco
Trigger voltage: 24, 48, 110, 230 V
• Earth leakage relay type A • External toroidal • Green power LED indicator (ON) • Red relay tripped LED indicator (TRIP) • Front TEST and RESET buttons • Modular DIN housing, 1 module, with transparent ...
Contrel elettronica
Trigger voltage: 12 V - 415 V
... Adjustable tripping and delay time. Earth leakage relay with 1 operation threshold, flush mount. External CT. Introduction Range ELR Product name ELR-1E Product type Residual current protection ...
Contrel elettronica
Trigger voltage: 24, 48, 110, 240, 415 V
... indicator (TRIP). Fail safe. Earth leakage relay with 2 operation thresholds, flush mount. External CT. Fail safe. Introduction Range ELR Product name ELR-2 Product type Residual current protection ...
Contrel elettronica
Trigger voltage: 110, 208, 380, 400, 415 V
... phase loss - Adjustable Trip levels and Time delay - SPDT Relay output - 17.5mm wide, DIN Rail mount - UL Listed The product monitors it’s own three-phase supply and for the output relay to energise, ...
Broyce Control
Tripping current: 0.16 A - 480 A
Protects motors against overload and locked rotor, securing safe operation. Standard model complies with Japanese and many international standards.
MITSUBISHI ELECTRIC AUTOMATION
Entry-level, yet powerful protection for motors and other electrical assets, finding application in power control centres and switchgear, motor control centres, etc. Complete and reliable protection ...
MITSUBISHI Automation
Tripping current: 0.1 A - 400 A
Trigger voltage: 200 V - 440 V
Protects motors against overload and locked rotor, securing safe operation. Standard model complies with Japanese and many international standards.
The REA 105 module detects light and carries out tripping if the main REA 101 module simultaneously provides an overcurrent signal. REA 105 modules are typically used for main-tie-main configured switchgears or as selective ...
ABB Oy Distribution Automation
... 7SJ85 overcurrent protection has been designed specifically for protection of feeders and lines in medium-voltage and high-voltage systems. The SIPROTEC 7SJ86 overcurrent ...
SIEMENS Energy automation and smart grid
Tripping current: 0.4 A - 420 A
Trigger voltage: 1,000, 690 V
... mounting on the contactors or on an individual base, the RW_E electronic overload relays provide protection for electric motors up to 840 A. •Incorporated protections: overload, phase ...
The Multilin 889 relay, a member of the Multilin 8 Series protective relay platform, has been designed for the protection, control, monitoring and management generators ...
Tripping current: 0.1 A - 0.16 A
Trigger voltage: 690 V
GSR1 series thermal overload relay is used in AC 50Hz (or 60Hz); rated voltage is up to 690V, for protecting AC motor against overload or phase-breaking.
Tianshui 213 Electrical Apparatus Group CO.,LTD.
A protection relay shuts off a machine operating in a way that represents a potential risk to itself.
ApplicationsThese devices supervise the operation of a machine or other installation by measuring current, voltage or phase variations. It shuts off the machine, cuts off power to an installation or triggers an alarm when a parameter exceeds authorized thresholds.
TechnologiesAs with other relays, electromechanical models exist, though most now are semiconductor-based solid state relays. Some are directly programmable and are in ISO cases for rail installation.
How to chooseChoice of a protection relay depends on the monitored parameters: overcurrent, zero velocity, excessive speed, current consumption, leaks, etc.
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