Finding your suitable isolation relay hvac is not easy. You may need consider between hundred or thousand products from many store. In this article, we make a short list of the best isolation relay hvac including detail information and customer reviews. Let’s find out which is your favorite one.
Reviews
1. Leviton 29A00-1 Omnistat2 Thermostat Isolation Module
Feature
Only products shipped and sold by Amazon.com (not third-party sellers) are eligible for full warrantOptional module that may be needed for HVAC systems using non-standard voltages
For use when continuous 24-volt power is not available from the HVAC equipment
Easy installation with included mounting clips
In applications with separate heating and cooling units, product allows you to obtain power from one
Description
Relay isolation for Omnistat2 thermostats. This optional module may be needed for HVAC systems using non-standard voltages. Mounting clips and instructions are included. For use when continuous 24-volt power is not available from the HVAC equipment. It completely isolates an RC-80B series (Rc-8x) thermostat from the heating and cooling system and allows a separate 24-volt AC transformer (sold separately) to power the thermostat. This is necessary because the Omnistat2 receives power from the HVAC unit. If there are separate heat and cool units, this product allows you to only obtain power from one but control both.2. ICM Controls ICM104 Delay-on-Make Timer with 10-1,000 seconds Adjustable Time Delay and SPDT Relay Output, 18-30 VAC
Feature
Highly precise digital circuitryHigh power, SPDT relay output
Input to output isolation
Works with anticipator-type thermostats
Repeat accuracy .5% over voltage and temperature range
Description
Delay-on-Make Timer with 10-1,000 seconds adjustable time delay and SPDT relay output, 18-30 VAC.3. Hoymk Ssr-25da 25a Actually 3-32v Dc to 24-480v Ac Ssr 25da Single Phase Solid State Relay
Feature
TRIAC Output,Zero Voltage Opens, Zero Current TurnoffOptical Isolation Between the Input Loop and Output Loop
Dielectric Strength 2500V Between Input-Output
100% Load Current Aging Test
Hoymk SSR-25DA
Description
Product Features:1, TRIAC Output,Zero Voltage Opens, Zero Current Turnoff;
2, Optical Isolation Between the Input Loop and Output Loop;
3, Dielectric Strength 2500V Between Input-Output;
4, 100% Load Current Aging Test.
This is Solid State Relay SSR-25DA 25A 3-32VDC.
Control: DC Control AC
Load Voltage :24-480VAC
Control Voltage 3-32VDC
Current DC:3-25mA
-State Leakage Current: 2mA
-State Pressure 1.5VAC
Off Time 10mS
Dielectric Withstand Voltage :2500VAC
Insulation Resistance: 500M /500VDC
Working Temperature:-30 -+ 75
Mounting:Bolts
Indicating:LED
Specification:
Original Box: Yes
Color: As Picture
Weight:132g
Size:62MM*45MM*26MM
Packing Content:
1 x Solid State Relay SSR-25DA
4. Omron Electronic Components G5Q-14 DC12 Relay 15Z1C3
Feature
Shipping via ePacket from China, it takes 7-10 business days to delivery.10Amp,250 VAC
5Amp, 30 VDC
Standards: UL, CSA, VDE
Mounting Type: PCB Number of Pins: 5
Description
Compact power PCB relays ideal for appliance and HVAC controls. High coil to contact isolation ensures 8 kV impulse withstand. UL Class F coil insulation standard. Contacts rated maximum 10 A/3 A (NO/NC). Available in fully sealed or vented models. G5Q-1/-1A are vented, G5Q-14/-1A4 are sealed construction. UL/CSA and VDE approvals. Dimensions: 20.3 mm L 10.3 mm W 15.8 mm H (max.).5. Honeywell AT140A1000 40Va, 120V Transformer - 60 Hz.
Feature
Foot mounted, plate mounted, clamp mounted or panel mounted 120 Vac Transformer with Metal end bellsColor-coded leadwires for primary connections and screw terminals for secondary connections, fixed 1/4 inch (6 mm) male quick-connects or color-coded leadwires for both primary and secondary, are standard
Meet Underwriters Laboratories Inc. Standard UL 1585 and are identified. Class 2 not wet, Class 3 wet
Meet NEC Class 2 requirements
Foot mounted, plate mounted on 2x4 in. or 4x4 in. outlet box, clamp mounted using outlet box knockout, or panel mounted
Description
HONEYWELL 40 VA STEP DOWN TRANSFORMER *Converts 120V to 24V *Foot plate knockout mounting *120 primary voltage, screw terminals connections on secondary circuit *9" leadwire connections *Provides power to 24 vac circuits in heating / cooling systems *Intended for use in systems with predictable, uniform loads *UL listed6. Honeywell AT72D1683 120V/24V Transformer
Feature
Override protection providedColor-coded leadwires for primary connections
Energy limiting, meets NEMA Standard DC20-1992
Transformer is marked NEMA Type D. Meets NEC Class 2 not wet, Class 3 wet and U.L. 1585 requirements
Mount within proper enclosure
Description
24 volt control circuit step-down transformer designed to power any 24 volt control system, including thermostats, gas valves and/or relays. Voltage (50/60Hz) 120. Connections 2 screw terminals, can be foot-mounted, plate mounted on 4" x 4", 4" octagon or 2" x 4" electrical boxes (transformer all above plate or 3/4 above plate); or clamp mounted via a junction box knockout.7. 1-CH 5V 30A Relay Module w/ Optocoupler Isolation
Feature
1-CH 30A high current relay, supports high / low level trigger;Completely isolated with optocouplers, relay control terminal voltage can be powered independently;
High quality 30A relay, normally open interfaces Maximum load: AC 250V / 30A, DC 30V / 30A
Description
Module can be set high or low triggered by jumper- Relay control terminal voltage and trigger terminal voltage jumpers can be powered completely isolated before and after class, to do after two different voltage requirements (such as a relay with 24V, trigger with 5V)
- Fault-tolerant design, even if the control line is broken, the relay will not operate
- Power indicator (green), relay status indicator (red)
- User-friendly interface design, all interfaces can be connected directly via terminal wiring leads, very convenient
- Module size: 50mm x 33mm x 24mm
- Static current: 5mA
- Maximum current: 190mA
- Trigger current: 2~4mA
Module interface
- DC+: DC power supply module is positive (positive terminal voltage trigger)
- DC-: DC power supply module is negative (negative terminal voltage trigger)
- IN: Signal trigger terminal (same as the default trigger voltage power supply)
- JD+: Relay control terminal voltage positive
- JD-: Relay control terminal voltage negative;
- JD+ DC+ shorted with a jumper cap, DC- and JD- shorted with a jumper cap, the same trigger terminal and relay control terminal voltage
- When the jumper is connected with the L side, IN terminal is low trigger, when connected H is a high end trigger
- Normally closed (NC): Relay normally closed terminal
- COM: Relay public terminal;
- Normally open (NO); Relay normally open terminal
General
Dimensions:1.97 in x 1.3 in x 0.94 in;
Weight:1.23 oz;
Packing List
1 x Module
8. Omron G3R-ODX02SN DC5-24 Solid State Relay, Indicator, Photocoupler Isolation, 2 A Rated Load Current, 5 to 48 VAC Rated Load Voltage, 5 to 24 VDC Input Voltage
Feature
Input Modules and Output Modules that have the same form-factor as the G2RUsing a coupler approved by VDE 0884 and assuring an I/O dielectric strength of 4kV
Incorporating an easy to see monitoring indicator
Approved by UL, CSA, and TUV
Compact SSRs for I/O Interface with High Dielectric Strength Requirements
Description
Omron Electronic Components9. Cloud Relays With Optocoupler Isolation 8 Channel Relay Module Plc Relay Dc 5V
Feature
module size:13.45cm * 5.27cm.uses:1,support single-chip control.2,industrial areas.3,plc control.4,home intelligent control.Description
this is an optocoupler 8 relay module dc 5v.10. Cloud Relays 4 Channel Relay Extension With Optocoupler Isolation Dc 5V
Feature
the module conforms to the safety standard,the control area and the load area have the isolation groove.uses the double-sided fr-4 circuit board design,the high-end chip production process.uses the relay control.has the relay action instruction,sucks the bright,the disconnect is not bright.
when the input has a low level signal,the common and normally open will be turned on.the relay can directly control the various devices and loads.
there are 4 normally open and 4 normally closed contacts.blue kf301 terminal connected to the control line more convenient the module size:75mm * 55mm * 18.5mm (l * w * h).net weight:61g.
with four fixed bolt holes,holes 3.1mm,spacing 68mm * 48mm.finished product through 100% functional testing and stability testing is very convenient.
Description
4 relay extension version 5v,using high current relay,ac250v 10a dc30v 10a.contact part of the independent wiring,safe and reliable.standard interface,you can expand on a variety of development boards.with fixed screw holes,easy to install.applicable to 51 / avr / avr / arm and other platforms.11. Cloud Relays 4 Channel Relay Module With Optocoupler Isolation 5V
Feature
module with genuine high-quality relay,normally open interface maximum load:ac 250v/10a,dc 30v/10a.using patch optocoupler isolation,drive ability,stable performance.trigger current 5ma.module operating voltage:5v.
can be set by the jumper high or low level trigger.fault-tolerant design,even if the control line off,the relay will not action.
power indicator (green),4 relay status indicator (red) interface design humane,all modules can be directly connected through the terminal terminal,very convenient.
module size:73mm * 50mm * 18.5mm (l * w * h).with four fixed bolt holes,holes 3.1mm,spacing 67mm * 44.5mm.
