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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
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
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 ...
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 ...
Trigger voltage: 24, 110 V
Grid protection monitoring relay RE series; Frequency and voltage monitoring; Grid and system protection; Functionally Safe; Measuring voltage 3 x 400/230V AC; Supply voltage 24V DC, ...
Trigger voltage: 24 V - 110 V
... system protection monitoring relay RE series; Frequency and voltage monitoring; Functional safety; Measuring voltage 3 x 400/230V AC; Supply voltage 24V DC, 110-240V AC; 3 CO contacts; Width 107 mm; Installation ...
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
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
... product details Monitoring E-stop, safety gate and safety light curtain Features: ◆Compact structure ◆Can detect input contacts’ short ◆Can select the manual&automatic reset ◆Self-monitoring ...
Shandong laien optic-electronic technology co.,ltd.
... product details Features: Compact structure Can detect input contacts’ short Can select the manual&automatic reset Self-monitoring redundancy circuit LED indicators to show the running and faults state With removable terminals Parameters: Model ...
Shandong laien optic-electronic technology co.,ltd.
... product details Monitoring double button. Features: Compact structure Can detect input contacts’ short Can select the manual&automatic reset Self-monitoring redundancy circuit LED indicators to show the running and faults ...
Shandong laien optic-electronic technology co.,ltd.
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.
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 ...
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.
Tripping current: 0.3 A - 1,500 A
Trigger voltage: 690 V
Increased flexibility, enhanced protection The C440/XTOE electronic overload relay delivers enhanced motor protection and communications capabilities in a single compact device, directly ...
Eaton Count Control Products
Tripping current: 0.3 A - 30 A
FPC 200 is a family of current or voltage digital protection relays with easy to use interface meant for variety of solutions in industry and power distribution. Its robust design enables it to be placed ...
Iskra d.d.
Tripping current: 0.5 A
Trigger voltage: 24 V
The LC 200 accessories electronic overload guard features a power supply that ranges from 12 to 24V AC or DC. It consists of a red LED six-digit display placed on the top of the device. It mounts on a DIN rail and uses a 5.08 plug-in ...
Pavone sistemi
Trigger voltage: 24, 240 V
... level Imax, the protector will trip and the red LED will illuminate indicating the fault condition. During the time delay period the red LED will flash for the set time (t) before the relay energises ...
Crompton Instruments
Tripping current: 5 A
Trigger voltage: 310 V - 520 V
• Three phase voltage Protection relay • Monitors: Over / Under voltage, Phase failure and Phase sequence • 1 C/O DPDT output relay • Auto reset feature available Brief Specifications Measuring ...
SELEC Controls Pvt. 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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