SEO Title: 80A GRT508AD Latching Relay For DIN Smart Meter SwitchingMeta Description: GRT508AD 1-pole latching relay switches 80A at 250VAC with a 1500A/10ms short-circuit rating, 5-48VDC coil and 32 x 30 x 15 mm fast-connection housing.URL Slug: grt508ad-80a-latching-relay
80A GRT508AD 1-Pole Latching Relay For DIN Smart Meter Switching
The GRT508AD is a 1-pole magnetic latching relay built for DIN-rail smart electricity meters. This 80A version switches resistive loads up to 80A at 250VAC, sets and resets on an impulse only, and holds its contact position without a continuous coil supply. Contacts are AgSnO2, the coil accepts 5-48VDC, and the 32 x 30 x 15 mm housing suits meter boards where space and heat budget are tight.
GRT508AD 80A version, front viewFast connection terminals, side profile
80ARated resistive load
1500A/10msMax short-circuit current
3,000 OPSElectrical endurance at 80A
32x30x15 mmOutline dimensions
Product Summary
The GRT508AD 80A is aimed at meter designs that need a high resistive switching capability inside a 1-pole package. Because the relay latches on an impulse, the coil is not energised between switching events, which keeps drive power low while the 80A contact carries the meter load. Mechanical endurance is 100,000 operations and electrical endurance is 3,000 operations at 80A 250VAC. The relay is RoHS compliant and is supplied for fast connection installation.
Key Features
1-pole latching relay with 80A rated resistive load and 80A max switching current
Impulse excitation only, available in single coil and double coil versions
AgSnO2 contact material with copper and plastic construction
Max switching voltage 250VAC, max short-circuit current 1500A/10ms
80A contact switching capability. The 80A rated resistive load and 80A max switching current cover meter circuits that must carry a heavy resistive load through a single-pole contact.
1500A/10ms short-circuit withstand. A defined short-circuit rating lets meter designers size protection coordination against a known relay limit.
Impulse excitation, no holding current. Both single coil and double coil versions latch on an impulse, so the coil is not powered between switching events and drive consumption stays low.
3,000 electrical operations at 80A 250VAC. The endurance figure is stated at the 80A load, so the switching life can be planned against the actual meter duty.
32 x 30 x 15 mm outline. The compact body fits DIN meter boards where board area and self-heating margins are already fixed.
Technical Specifications
Model
GRT508AD (80A rating)
Contact form
1-pole latching
Rated load (resistive)
80A
Max switching current
80A
Max switching voltage
250VAC
Contact material
AgSnO2
Coil voltage
5-48 VDC
Coil drive
Impulse excitation, single coil and double coil
Mechanical endurance
100,000 OPS
Electrical endurance
3,000 OPS (80A 250VAC) / 10,000 OPS (60A 250VAC)
Max short-circuit current
1500A/10ms
Ambient temperature
-40℃ ~ +85℃
Installation form
Fast connection
Outline dimensions
32 x 30 x 15 mm
Compliance
RoHS compliant
Models and Options
The GRT508AD family covers two contact ratings. The 80A rating is specified here with 3,000 electrical operations at 250VAC. The 60A rating reaches 10,000 electrical operations at 250VAC and suits programmes where switching life matters more than peak current. Coil voltage is selectable within 5-48VDC, and both single coil and double coil latching versions are available. Accessories can be welded according to customer requirements.
Materials and Structure
Contacts are AgSnO2, chosen for arc erosion behaviour under repetitive switching. Conductive parts are copper and the insulating body is moulded plastic, forming a 32 x 30 x 15 mm block. Installation is by fast connection; in metering builds the relay is mated to the board with PCB soldering or screw mounting. The single-pole contact arrangement keeps the meter wiring path short.
Applications
Smart electricity meters and energy measurement modules are the primary application. The relay is used for on-off control of meter circuits, with latching state retention after each pulse. The smart metering scenario covers ambient temperature -40℃ to +85℃, relative humidity 5% to 85%RH non-condensing, altitude up to 2000 m, and surroundings free of corrosive gas or explosive dust, under resistive load.
Customization
Coil voltage selection within 5-48VDC, single or double coil configuration, and welding of accessories to customer drawings are offered. The supplier works as a Customized ODM partner on smart meter programmes; coil, load and footprint requirements are evaluated per project.
Case Study
A Customized ODM smart meter programme covering Korea, Denmark, Germany, Spain, Finland, the UK, Greece, India, South Africa and Brazil has used 5,000,000 units of this relay family over 10 years. The reported result is stable operation, with ultra-low coil power consumption, consistent contact performance and long service life.
FAQ
What separates the 80A and 60A ratings?
The 80A rating switches 80A at 250VAC with 3,000 electrical operations; the 60A rating reaches 10,000 electrical operations at 60A 250VAC.
Does the coil need continuous power to hold state?
No. Only impulse excitation is needed; the contact position is held after the pulse without a continuous coil supply.
Are single coil and double coil versions both available?
Yes. Impulse excitation applies to both single coil and double coil versions of the relay.
What is the maximum short-circuit current?
The maximum short-circuit current is 1500A for 10ms.
What is the operating temperature range?
The ambient temperature range is -40℃ to +85℃.
Is the relay RoHS compliant?
Yes, the relay is RoHS compliant.
Can accessories be adapted to our assembly?
Accessories can be welded according to customer requirements; share your drawing for evaluation.
Inquiry Information
Zhejiang Great Electrical Co., Ltd. was founded in 2003, operates a 50,000m² factory with 500 employees and 60 engineers, and exports 55% of output, mainly to the EU and India.
Contact: Annie · Mobile +86 13626734569 · WhatsApp +86 18057329886 · Email sales5@great-relay.com Address: No.9 Linhu Avenue, Yaozhuang Town, Jiashan County, Jiaxing City, Zhejiang Province, China
Send coil voltage, rated load, coil configuration and annual volume for a quotation.
Image Filename and Alt Suggestions
grt508ad-80a-latching-relay-front-view.png — Alt: GRT508AD 80A latching relay front view with 32 x 30 x 15 mm plastic housing
grt508ad-latching-relay-fast-connection-side.png — Alt: GRT508AD latching relay side profile showing fast connection terminals
grt508ad-80a-relay-ag-sno2-contacts.png — Alt: GRT508AD relay contact block with AgSnO2 contacts
grt508ad-80a-relay-outline-dimensions.png — Alt: GRT508AD latching relay 32 x 30 x 15 mm dimension drawing
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