Modular Solid State Relays (SSR) 5 - 15 - 30A
Function and Features:
The 77 Series is made up of modular and “hocky puck” style solid state relays with the following features (according to Type):
Modular
• Wide 17.5 mm and 22.5 mm, heat sink + plastic casing
• 60 to 440 V AC output (with double SCR) or 24 to 277 AC output (with Triac)
• 5 kV / 6 kV (1.2/50 μs) insulation between input and output
• Zero-crossing or Random versions available
• High switching speed and long electrical life
• Silent switching, without electrical arc or “contact” bounce
• Low absorption input circuit
• Position of relay version terminals (terminals entrance and exit on opposite sides)
• Also suitable for three-phase systems
• 35 mm rail (EN 60715) mounting
Hocky Puck
• 24 to 240 V AC output
• Zero-crossing version available
• High switching speed and long electrical life
• Silent switching; spark-free and bounce-free switching
• Low control power
• Position of relay version terminals (input and output terminals on opposite sides)
• Also suitable for three-phase systems
• Mounting on heat sink with screws
Applications:
• Drying Kilns
• Heating & Cooling
• Lighting Controls in Corridors (for hotels, offices & hospitals)
• Bottling Plant
• Labelling Machines
• Packaging Machines
Enquiry Form: https://www.epreston.co.uk/contact/
Home Page: https://www.epreston.co.uk/epblog/
Panel Mount Solid State Relays
Sensata | Crydom EL Series DC output solid state relays come in a compact, 21 x 35 mm housing and offer ratings up to 20 Amps. These compact SSRs come with a pre-installed thermal pad, and are C-UL-US and TUV certified and CE compliant. The EL Series mechanical design includes quick connect terminals and an innovative 90° bent terminals option ideal for applications with limited vertical space.
Features:
• Ratings of 5A, 10A and 20A @ 3-100 VDC
• UL Recognized, TUV, CE and RoHS Compliant
• 5, 12 and 24 VDC control input options
• Mosfet Output
• Thermal Pad Included
• Plastic housing with min. 250 CTI rating (PLC2) for demanding applications
Applications:
• Battery Management Systems
• Backup Power Supplies
• Valves
• Vending Equipment
• Lighting control
• Medical Equipment
Enquiry Form: https://www.epreston.co.uk/contact/
Home Page: https://www.epreston.co.uk/epblog/
Low-Profile P.C.B. Relays 3 - 5 - 8 - 12 - 16A
Function and Features:
The 41 Series is a range of miniature low profile printed circuit board relays (height 15.7 mm). The different Types that make up this Series are:
EMR version
• Low profile, 15.7 mm height
• AC & DC coils
• 8 mm, 6 kV (1.2/50 μs) isolation, coil – contacts
• Flux proof: RT II standard, (RT III option)
Solid State (SSR) version
• Low profile, 15.7 mm height
• Sensitive DC input circuits
• Silent, high speed switching with long electrical life
Applications:
• Medical and Dentistry
• Industrial Robots
• Building Automation
• Control Systems
• Timers and Lighting Controls
• Door and Gate Openers
• Electronic Circuit Boards
• Vending Machines
Enquiry Form: https://www.epreston.co.uk/contact/
Home Page: https://www.epreston.co.uk/epblog/
Crouzet HIH Relays monitor the stadium lighting electrical network current in order to alert the maintenance team as soon as a failure occurs.
The Olympic Committee defines strict standards for stadium lighting. The luminosity must be uniform on surfaces during the games to ensure an equity between athletes and an optimal quality of television broadcasting.
To ensure a top quality lighting of the event, the regulation imposes a maximum duration of 20 minutes between the breakdown and the repair of a stadium projector. That is why it is key to equip each stadium and playing field with a system checking the operating condition of the headlamps.
Features:
• Control of AC and DC currents
• Automatic recognition of AC/DC
• Measurement ranges from 2 mA to 10 A
• Choice between over and undercurrent
• True RMS measurement
• Selectable latching (memory) function
Enquiry Form: https://www.epreston.co.uk/contact/
Home Page: https://www.epreston.co.uk/epblog/
Plug-In / PCB Mount Solid State Relays
Sensata | Crydom CN Series AC & DC Output Plug-in Solid State Relays are thin 5 mm wide relays ideally suited for high density PCB applications.
CN Series SSRs are designed to be pluggable into industry standard relay sockets or solderable into printed circuit boards, and they are available in ratings of 2 Amps at 24 to 280 VAC or 0.1 to 6 Amps at 0 to 100 VDC. They are UL recognized and CE compliant.
Features:
• 5 mm Mini SIP SSR
• Ratings 24VDC _3.5A, 48VDC _100mA, 100VDC _6A and 240VAC_2A
• DC Control, 5, 24 and 60 V
• UL & cUL recognized @ 40°C, 100K-Cycle Endurance Test
• CE & RoHS Compliant
Applications:
• Automation Equipment
• Test Equipment
• Packaging equipment
• Valves & Solenoids
• Vending Equipment
• Medical Equipment
Enquiry Form: https://www.epreston.co.uk/contact/
Home Page: https://www.epreston.co.uk/epblog/
Finder 39 Series: MasterINTERFACE - Relay Interface Modules (EMR or SSR) 0,1...6 A
The 39 Series is a range of modular interface relays which include the following features (according to Type):
• 6.2mm wide
• DC, AC or AC/DC coil versions
• Special coil/input leakage current suppression types
• With fuse protection module
• Timer version
• ATEX/HazLoc compliant (EX nC) option available
• Push-in and screw terminals
Applications:
• Bottling plants
• Packaging Machines
• Traffic Light Controls
• Carousel Warehouses
• Control Panels
• Panels for Electrical Distribution
• Labelling Machines
• Hoists & Cranes
Enquiry Form: https://www.epreston.co.uk/contact/
Home Page: https://www.epreston.co.uk/epblog/
Din Rail Mount Solid State Relays
Sensata | Crydom SeriesOne DR family of DIN Rail mount Solid State Relays incorporate proprietary thermal management technology to achieve exceptional output ratings of 3 up to 24 Amps at 1 to 100 VDC in compact 11mm and 18mm wide housings. These compact SSRs are ideal for use in demanding applications where space may be limited, providing greater power density than other DIN Rail Solid State Relays.
Features:
• Ratings from 3 up to 24 Amps
• Load voltage ratings of 1-60 VDC and 1-100 VDC
• Fits standard 35mm DIN Rail
• LED Input Status Indicator
• DC Control
• UL and cUL Listed, CE & RoHS Compliant
• UL 508 Endurance Rating for Enhanced Reliability
• UL Class I and II, Division 2, for Hazardous Locations
Applications:
• Battery Management Systems
• Backup Power Supplies
• Valve Control
• Lighting Control
• Automation Equipment
Enquiry Form: https://www.epreston.co.uk/contact/
Home Page: https://www.epreston.co.uk/epblog/
Finder 38 Series: Relay Interface Modules (EMR or SSR) 0.1-2-6-8A
The 38 Series is a range of of EMR or SSR modular interface relays which include the following features (according to Type):
• 6.2mm or 14mm wide
• DC or AC/DC coil versions
• Special coil/input leakage current suppression types
• Timer version
• Screw & screwless terminals
Applications:
• Bottling plants
• Packaging Machines
• Control Panels
• Traffic Light Controls
• Vending Machines
• Programmable Controllers
• Panels for Electrical Distribution
• Labelling Machines
Enquiry Form: https://www.epreston.co.uk/contact/
Home Page: https://www.epreston.co.uk/epblog/
New DC Output SSR Models: DIN Rail, Panel Mount and Plug-in Solid State Relays
Sensata / Crydom are pleased to announce the expansion of their DC Output Solid State Relay offering. The new models extend across 4 popular series, including the SeriesOne DR, CN Series, EL Series and ED Series.
The number of applications for DC output relays is increasing, mainly due to the increase of portable devices, solar powered systems and electrification initiatives. Taking advantage of improved switching components, Sensata is expanding the current handling capability of select families of DC output SSRs, while maintaining the same form and factor.
Enquiry Form: https://www.epreston.co.uk/contact/
Home Page: https://www.epreston.co.uk/epblog/
Finder 34 Series: Slim P.C.B. Relays (EMR or SSR) 0.1-2-6A
Finder’s Solid State Relays are excellent in interfacing applications. Small SSR’s such as Finder’s 34 Series draw only a few mA, so they sip at the limited output currents available from PLCs.
The 34 Series (EMR) relays include the following features (according to Type):
• Sensitive DC coil: 170 mW
• 5 mm wide – 6kV (1.2/50 μs) isolation, coil – contacts
The 34 Series (SSR) relays include the following features (according to Type):
• Sensitive DC input circuits
• 5 mm wide
• Silent, high speed switching with long electrical life
Applications:
• Bottling Plants
• Packaging Machines
• Labelling Machines
• Road / Tunnel Lighting
• Burners, Boilers & Furnaces
• Timers & Lighting Controls
• Electronic Circuit Boards
• Programmable Controllers
Enquiry Form: https://www.epreston.co.uk/contact/
Home Page: https://www.epreston.co.uk/epblog/
© E. Preston (Electrical) Ltd 2025.
UK distributor of electrical and electronic components.