CARLO GAVAZZI RM1A40D75 Solid State Relay SPST-NO 75A 24-265V
Enhance your industrial automation systems with the CARLO GAVAZZI RM1A40D75 Solid State Relay, designed for reliable switching of resistive, inductive, and capacitive loads. This high-performance relay features direct copper bonding (DCB) technology, ensuring excellent electrical contact and durability.
Industrial, 1-phase solid state relay with antiparallel thyristor output
Zero switching (RM1A) or instant-on switching (RM1B) AC solid state relay options
Control voltage ranges from 3-32 VDC and 20-280 VAC/22-48 VDC
Rated operational current up to 75A (model dependent)
Operational voltage ratings up to 600VACrms with blocking voltage up to 1400V
Opto-isolation > 4000VACrms for safety and noise immunity
Built-in varistor for transient protection
LED indicator for control input status
Clip-on IP20 protection cover for touch safety
Self-lifting terminals for secure connections
Housing free of moulding mass for easy maintenance
Technical Specifications
Switching Mode
Rated Operational Voltage
Control Voltage
Rated Operational Current
Zero Switching (ZC) / Instant-on (IO)
Up to 600VACrms / 1400V blocking voltage
3-32 VDC or 20-280 VAC/22-48 VDC (model dependent)
25A, 50A, 75A, 100A (model dependent)
Selection Guide
Rated Operational Voltage
Blocking Voltage
Control Voltage
Part Number (for 25A)
Part Number (for 50A)
Part Number (for 75A)
Part Number (for 100A)
230VACrms
650V p
4-32 VDC
RM1A23D25
RM1A23D50
RM1A23D75
RM1A23D100
400VACrms
800V p
4-32 VDC
RM1A40D25
RM1A40D50
RM1A40D75
RM1A40D100
480VACrms
1200V p
4-32 VDC
RM1A48D25
RM1A48D50
RM1A48D75
RM1A48D100
600VACrms
1400V p
4-32 VDC
RM1A60D25
RM1A60D50
RM1A60D75
RM1A60D100
Additional Information
Suitable for heavy industrial applications with transient protection via built-in varistor
UL endurance testing: 6,000 cycles
Mounting screws M5, torque 1.5-2.0Nm
Connection terminals: M5 screw with captivated washer (L1, T1), M3 screw with captivated washer (A1, A2)
Stripping length: 12 mm for power terminals, 8 mm for control terminals
For more detailed technical data, please refer to the datasheet. The datasheet was not processed; please search the internet for the part number for more details.
Use left/right arrows to navigate the slideshow or swipe left/right if using a mobile device
Choosing a selection results in a full page refresh.
Press the space key then arrow keys to make a selection.
Shopping Cart
{"id":10026335502653,"title":"RM1A40D75","handle":"rm1a40d75","description":"\u003ch3\u003eCARLO GAVAZZI RM1A40D75 Solid State Relay SPST-NO 75A 24-265V\u003c\/h3\u003e\n\u003cp\u003eEnhance your industrial automation systems with the CARLO GAVAZZI RM1A40D75 Solid State Relay, designed for reliable switching of resistive, inductive, and capacitive loads. This high-performance relay features direct copper bonding (DCB) technology, ensuring excellent electrical contact and durability.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e RM1A40D75\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e CARLO GAVAZZI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e CN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Measure:\u003c\/strong\u003e EA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eECCN:\u003c\/strong\u003e EAR99\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e BLK\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDatasheet:\u003c\/strong\u003e \u003ca href=\"https:\/\/gavazziautomation.com\/images\/PIM\/DATASHEET\/ENG\/RM1A.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIndustrial, 1-phase solid state relay with antiparallel thyristor output\u003c\/li\u003e\n\u003cli\u003eZero switching (RM1A) or instant-on switching (RM1B) AC solid state relay options\u003c\/li\u003e\n\u003cli\u003eControl voltage ranges from 3-32 VDC and 20-280 VAC\/22-48 VDC\u003c\/li\u003e\n\u003cli\u003eRated operational current up to 75A (model dependent)\u003c\/li\u003e\n\u003cli\u003eOperational voltage ratings up to 600VACrms with blocking voltage up to 1400V\u003c\/li\u003e\n\u003cli\u003eOpto-isolation \u0026gt; 4000VACrms for safety and noise immunity\u003c\/li\u003e\n\u003cli\u003eBuilt-in varistor for transient protection\u003c\/li\u003e\n\u003cli\u003eLED indicator for control input status\u003c\/li\u003e\n\u003cli\u003eClip-on IP20 protection cover for touch safety\u003c\/li\u003e\n\u003cli\u003eSelf-lifting terminals for secure connections\u003c\/li\u003e\n\u003cli\u003eHousing free of moulding mass for easy maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSwitching Mode\u003c\/th\u003e\n\u003cth\u003eRated Operational Voltage\u003c\/th\u003e\n\u003cth\u003eControl Voltage\u003c\/th\u003e\n\u003cth\u003eRated Operational Current\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZero Switching (ZC) \/ Instant-on (IO)\u003c\/td\u003e\n\u003ctd\u003eUp to 600VACrms \/ 1400V blocking voltage\u003c\/td\u003e\n\u003ctd\u003e3-32 VDC or 20-280 VAC\/22-48 VDC (model dependent)\u003c\/td\u003e\n\u003ctd\u003e25A, 50A, 75A, 100A (model dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSelection Guide\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eRated Operational Voltage\u003c\/th\u003e\n\u003cth\u003eBlocking Voltage\u003c\/th\u003e\n\u003cth\u003eControl Voltage\u003c\/th\u003e\n\u003cth\u003ePart Number (for 25A)\u003c\/th\u003e\n\u003cth\u003ePart Number (for 50A)\u003c\/th\u003e\n\u003cth\u003ePart Number (for 75A)\u003c\/th\u003e\n\u003cth\u003ePart Number (for 100A)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e230VACrms\u003c\/td\u003e\n\u003ctd\u003e650V p\u003c\/td\u003e\n\u003ctd\u003e4-32 VDC\u003c\/td\u003e\n\u003ctd\u003eRM1A23D25\u003c\/td\u003e\n\u003ctd\u003eRM1A23D50\u003c\/td\u003e\n\u003ctd\u003eRM1A23D75\u003c\/td\u003e\n\u003ctd\u003eRM1A23D100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e400VACrms\u003c\/td\u003e\n\u003ctd\u003e800V p\u003c\/td\u003e\n\u003ctd\u003e4-32 VDC\u003c\/td\u003e\n\u003ctd\u003eRM1A40D25\u003c\/td\u003e\n\u003ctd\u003eRM1A40D50\u003c\/td\u003e\n\u003ctd\u003eRM1A40D75\u003c\/td\u003e\n\u003ctd\u003eRM1A40D100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e480VACrms\u003c\/td\u003e\n\u003ctd\u003e1200V p\u003c\/td\u003e\n\u003ctd\u003e4-32 VDC\u003c\/td\u003e\n\u003ctd\u003eRM1A48D25\u003c\/td\u003e\n\u003ctd\u003eRM1A48D50\u003c\/td\u003e\n\u003ctd\u003eRM1A48D75\u003c\/td\u003e\n\u003ctd\u003eRM1A48D100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e600VACrms\u003c\/td\u003e\n\u003ctd\u003e1400V p\u003c\/td\u003e\n\u003ctd\u003e4-32 VDC\u003c\/td\u003e\n\u003ctd\u003eRM1A60D25\u003c\/td\u003e\n\u003ctd\u003eRM1A60D50\u003c\/td\u003e\n\u003ctd\u003eRM1A60D75\u003c\/td\u003e\n\u003ctd\u003eRM1A60D100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eAdditional Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSuitable for heavy industrial applications with transient protection via built-in varistor\u003c\/li\u003e\n\u003cli\u003eUL endurance testing: 6,000 cycles\u003c\/li\u003e\n\u003cli\u003eMounting screws M5, torque 1.5-2.0Nm\u003c\/li\u003e\n\u003cli\u003eConnection terminals: M5 screw with captivated washer (L1, T1), M3 screw with captivated washer (A1, A2)\u003c\/li\u003e\n\u003cli\u003eStripping length: 12 mm for power terminals, 8 mm for control terminals\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor more detailed technical data, please refer to the \u003ca href=\"https:\/\/gavazziautomation.com\/images\/PIM\/DATASHEET\/ENG\/RM1A.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e. The datasheet was not processed; please search the internet for the part number for more details.\u003c\/p\u003e","published_at":"2025-08-15T06:16:45+05:30","created_at":"2025-08-15T06:16:46+05:30","vendor":"Waldom Electonics","type":"","tags":["265V","75A","CARLO","IMPORT_CSV","IMPORT_PT2","Relay","SSR","WLDM"],"price":1117598,"price_min":1117598,"price_max":1117598,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":50622077403453,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"RM1A40D75","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"RM1A40D75","public_title":null,"options":["Default Title"],"price":1117598,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"RM1A40D75","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/11060577.png?v=1755218806"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/11060577.png?v=1755218806","options":["Title"],"media":[{"alt":null,"id":45846943007037,"position":1,"preview_image":{"aspect_ratio":1.0,"height":400,"width":400,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/11060577.png?v=1755218806"},"aspect_ratio":1.0,"height":400,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/11060577.png?v=1755218806","width":400}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eCARLO GAVAZZI RM1A40D75 Solid State Relay SPST-NO 75A 24-265V\u003c\/h3\u003e\n\u003cp\u003eEnhance your industrial automation systems with the CARLO GAVAZZI RM1A40D75 Solid State Relay, designed for reliable switching of resistive, inductive, and capacitive loads. This high-performance relay features direct copper bonding (DCB) technology, ensuring excellent electrical contact and durability.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e RM1A40D75\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e CARLO GAVAZZI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e CN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Measure:\u003c\/strong\u003e EA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eECCN:\u003c\/strong\u003e EAR99\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e BLK\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDatasheet:\u003c\/strong\u003e \u003ca href=\"https:\/\/gavazziautomation.com\/images\/PIM\/DATASHEET\/ENG\/RM1A.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIndustrial, 1-phase solid state relay with antiparallel thyristor output\u003c\/li\u003e\n\u003cli\u003eZero switching (RM1A) or instant-on switching (RM1B) AC solid state relay options\u003c\/li\u003e\n\u003cli\u003eControl voltage ranges from 3-32 VDC and 20-280 VAC\/22-48 VDC\u003c\/li\u003e\n\u003cli\u003eRated operational current up to 75A (model dependent)\u003c\/li\u003e\n\u003cli\u003eOperational voltage ratings up to 600VACrms with blocking voltage up to 1400V\u003c\/li\u003e\n\u003cli\u003eOpto-isolation \u0026gt; 4000VACrms for safety and noise immunity\u003c\/li\u003e\n\u003cli\u003eBuilt-in varistor for transient protection\u003c\/li\u003e\n\u003cli\u003eLED indicator for control input status\u003c\/li\u003e\n\u003cli\u003eClip-on IP20 protection cover for touch safety\u003c\/li\u003e\n\u003cli\u003eSelf-lifting terminals for secure connections\u003c\/li\u003e\n\u003cli\u003eHousing free of moulding mass for easy maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSwitching Mode\u003c\/th\u003e\n\u003cth\u003eRated Operational Voltage\u003c\/th\u003e\n\u003cth\u003eControl Voltage\u003c\/th\u003e\n\u003cth\u003eRated Operational Current\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZero Switching (ZC) \/ Instant-on (IO)\u003c\/td\u003e\n\u003ctd\u003eUp to 600VACrms \/ 1400V blocking voltage\u003c\/td\u003e\n\u003ctd\u003e3-32 VDC or 20-280 VAC\/22-48 VDC (model dependent)\u003c\/td\u003e\n\u003ctd\u003e25A, 50A, 75A, 100A (model dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSelection Guide\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eRated Operational Voltage\u003c\/th\u003e\n\u003cth\u003eBlocking Voltage\u003c\/th\u003e\n\u003cth\u003eControl Voltage\u003c\/th\u003e\n\u003cth\u003ePart Number (for 25A)\u003c\/th\u003e\n\u003cth\u003ePart Number (for 50A)\u003c\/th\u003e\n\u003cth\u003ePart Number (for 75A)\u003c\/th\u003e\n\u003cth\u003ePart Number (for 100A)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e230VACrms\u003c\/td\u003e\n\u003ctd\u003e650V p\u003c\/td\u003e\n\u003ctd\u003e4-32 VDC\u003c\/td\u003e\n\u003ctd\u003eRM1A23D25\u003c\/td\u003e\n\u003ctd\u003eRM1A23D50\u003c\/td\u003e\n\u003ctd\u003eRM1A23D75\u003c\/td\u003e\n\u003ctd\u003eRM1A23D100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e400VACrms\u003c\/td\u003e\n\u003ctd\u003e800V p\u003c\/td\u003e\n\u003ctd\u003e4-32 VDC\u003c\/td\u003e\n\u003ctd\u003eRM1A40D25\u003c\/td\u003e\n\u003ctd\u003eRM1A40D50\u003c\/td\u003e\n\u003ctd\u003eRM1A40D75\u003c\/td\u003e\n\u003ctd\u003eRM1A40D100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e480VACrms\u003c\/td\u003e\n\u003ctd\u003e1200V p\u003c\/td\u003e\n\u003ctd\u003e4-32 VDC\u003c\/td\u003e\n\u003ctd\u003eRM1A48D25\u003c\/td\u003e\n\u003ctd\u003eRM1A48D50\u003c\/td\u003e\n\u003ctd\u003eRM1A48D75\u003c\/td\u003e\n\u003ctd\u003eRM1A48D100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e600VACrms\u003c\/td\u003e\n\u003ctd\u003e1400V p\u003c\/td\u003e\n\u003ctd\u003e4-32 VDC\u003c\/td\u003e\n\u003ctd\u003eRM1A60D25\u003c\/td\u003e\n\u003ctd\u003eRM1A60D50\u003c\/td\u003e\n\u003ctd\u003eRM1A60D75\u003c\/td\u003e\n\u003ctd\u003eRM1A60D100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eAdditional Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSuitable for heavy industrial applications with transient protection via built-in varistor\u003c\/li\u003e\n\u003cli\u003eUL endurance testing: 6,000 cycles\u003c\/li\u003e\n\u003cli\u003eMounting screws M5, torque 1.5-2.0Nm\u003c\/li\u003e\n\u003cli\u003eConnection terminals: M5 screw with captivated washer (L1, T1), M3 screw with captivated washer (A1, A2)\u003c\/li\u003e\n\u003cli\u003eStripping length: 12 mm for power terminals, 8 mm for control terminals\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor more detailed technical data, please refer to the \u003ca href=\"https:\/\/gavazziautomation.com\/images\/PIM\/DATASHEET\/ENG\/RM1A.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e. The datasheet was not processed; please search the internet for the part number for more details.\u003c\/p\u003e"}
Unfortunately I havent tested the 5G, Only difficult part was connecting antennas. But everything is good, by default it runs on Qualcom's QMI mode, Had to switch to MBIM and it works good with Windows. Planning to run with OpenWRT soon.
