The DMTH Series: A Robust and Cost-Effective DIP Switch

DMTH: The Industry Standard 2.54mm THT-DIP-Switch

• 2.54mm standard pitch design
• Low profile
• High number of cycles
• Through hole terminal

The DMTH series is a robust and cost-effective DIP switch designed for reliable manual configuration in industrial and electronic applications. Featuring the industry-standard 2.54mm pitch and THT mounting technology, it offers excellent compatibility with established PCB designs while ensuring secure mechanical retention and soldering reliability.

With up to 12 positions, SPST contacts, recessed or raised actuator options, and a low-profile 3.6mm design, DMTH supports flexible system configuration without increasing board space requirements. The switch is rated for up to 2,000 operating cycles and operates reliably from -40°C to +85°C.

Typical applications include address setting, communication protocol selection (e.g. RS-485, Modbus), function control, BIOS and hardware configuration, medical equipment parameter settings, HVAC systems, industrial controllers, robotics and consumer appliances. Combining proven performance, competitive cost and fast availability, DMTH is an ideal solution for OEMs seeking a reliable alternative to premium-priced DIP switch brands.

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Modern control cabinet solutions are no longer created from individual components, but from integrated systems that seamlessly combine planning, wiring, and labeling.

This is exactly where the selos system comes in: a modular, perfectly coordinated overall concept consisting of terminal blocks, digital planning tools, professional labeling, and services. Developed to make your processes easier, faster, and safer.

Safe Wiring
With our selos WTPN terminal blocks with push-in connection, you can wire quickly, safely and completely without tools. For maximum flexibility, the selos WTN series with screw connection is also available - ideal for a wide range of applications and proven technology.

Your Advantages:

• Tool-free quick wiring or proven screw technology
• Extensive range of accessories for all variants
• Space-saving design, high contact quality, and excellent vibration resistance
• Faster installation processes

The SELOS WTN Din Rail Terminal Blocks with Screw Connection provides a reliable connection, solid and functional, known worldwide, and in use millions of times over.

The selos series combines the classic screw connection with modern connection technology, with the focus on customer benefits and increased efficiency in wiring and the supply chain.

• Includes feed-through and ground blocks with 2, 3 or 4 termination points
• Multi-tier blocks in two and three tier designs
• Knife-edge disconnect blocks and fuse blocks
• Specialty function blocks are available with a wide variety of diode circuits
• Diverse application-specific terminals, such as transformer disconnect terminals
• Smaller size – Uniform design – Fewer accessories
• Rated cross-section 1.5mm2 to 240mm2

The SELOS WTPN Din Rail Terminal Block with
Push-In Connection terminates wires easily,
directly and without tools.

With an effective global concept, compact design
and high-performance contact technology, selos WTPN
minimizes the installation time and reduces inventory
costs to a minimum.

• Includes Feed-through and ground blocks with 2, 3 or 4 termination point
• Multi-tier blocks in two and three tier designs
• Knife-edge disconnect blocks in one and two tier designs and fuse blocks
• Specialty function blocks are available with application specific diode circuits

Enquiry Form: https://www.epreston.co.uk/contact/

Home Page: https://www.epreston.co.uk/epblog/

Finder SSR Series 34, 38, 39, 41, 77

Finder Solid State Relays (SSRs) are silent, high-speed electronic switches that use semiconductor components rather than mechanical contacts to control electrical loads. They offer exceptional reliability, a longer lifespan, and are ideal for frequent switching, industrial automation, and HVAC systems.

Finder offers several SSR product lines tailored to various mounting types, current loads, and voltage requirements:

Enquiry Form: https://www.epreston.co.uk/contact/

Home Page: https://www.epreston.co.uk/epblog/

4750 Strip Block for Snap-in Mounting with up to 7 IEC Appliance Outlets F

The Schurter 4750 Series is a configurable, snap-in mounting strip block designed for high-density intelligent Power Distribution Units (PDUs) and data center equipment. It compactly houses 2 to 7 IEC Appliance Outlets (Type F) and eliminates the need for external LEDs by integrating optional light pipes for status indication.

Description:

• Panel mount
• Snap-in version front side (1.2 / 1.5 / 1.7 mm)
• Configurable Strip block from 2 up to 7 outlets type F
• Cord retention for cordsets with V-Lock, Twylock or P-Lock
• Pre-assembled Light Pipe for status indication
• Solder / PCB / QC (4.8 / 6.3 x 0.8) mm

Key Features:

• Configurable Bus bar (L, N, PE)
• Optionally with or without light pipes on L or N side
• Color coding in black (grey and white upon request)
• Solder / PCB / QC (4.8 / 6.3 x 0.8 mm)

Characteristics:

• Compact solution for intelligent PDU applications
• Suitable for use in equipment according to IEC/UL 62368-1

Enquiry Form: https://www.epreston.co.uk/contact/

Home Page: https://www.epreston.co.uk/epblog/

77 Series: Modular Solid State Relays (SSR) 5-15-30A

The 77 Series is made up of modular and “hocky puck” style solid state relays

Functions & Features (according to Type):

• Input AC or DC
• 230V AC or 400V AC output
• Rated voltage range (19…305)V AC or (48…480)V AC
• Zero-crossing and random switch-on versions
• Suitable for lamp loads
• 17.5 and 22.5 mm housing

Features (“hockey puck”):

• Input AC or DC
• 230 V AC or 400 V AC output
• Switching voltage range (19…305) V AC or (48…480) V AC
• Suggested applications: heater control
• Mounting to heatsink with screws
• Zero-crossing version

Applications:

• Drying kilns
• Heating and cooling
• Lighting control in corridors (for hotels, offices and hospitals)
• Bottling plant
• Labelling machines
• Packaging machines

Enquiry Form: https://www.epreston.co.uk/contact/

Home Page: https://www.epreston.co.uk/epblog/

FMAD NEO, 1-Stage Filter for 3-Phase Systems

The FMAD NEO is a highly compact, single-stage EMC/EMI power line filter designed for 3-phase systems with a neutral line. Manufactured by Schurter, it provides high-efficiency noise suppression for industrial machinery and electronic equipment where control cabinet space is strictly limited.

Description:

• Terminals for three phases, neutral conductor and ground
• 1 stage
• Very high attenuation
• Industrial or low leakage current versions

Key Features:

• Compact Footprint: Features a nearly cubed shape, making it ideal for the space constraints of modern 3-phase control cabinets.
• High Attenuation: Delivers excellent noise suppression relative to its small size and weight.
• Machine Safety Compliant: Certain variants comply with the IEC 60204-1 machine safety standard, featuring quick capacitor discharge times (residual voltage < 60 V within 1–2 seconds) and insulation resistance of at least 1 MΩ.
• Wide Temperature Range: Operates effectively in harsh climatic conditions, ranging from -40°C to +100°C.

Applications:

• Voltage rating 520 VAC for world wide acceptance
• Protection against interference voltage from the mains
• Especially designed for industrial applications such as: Frequency Converters, Stepper Motor Drives, UPS-Systems, Inverters
• Variants Machine Safety suitable for machine applications according to IEC 60204-1
• Suitable for use in equipment according to IEC/UL 62368-1

Enquiry Form: https://www.epreston.co.uk/contact/

Home Page: https://www.epreston.co.uk/epblog/

Mini SIP Style SSRs with ratings up to 2 Amps at 12-280 VAC

The ASO Series is a family of PCB Mount
Mini SIP Solid State Relays with ratings
up to 2 Amps at 12-280 VAC.

Features:

• Back-to-back SCR output
• 4-10 VDC control
• Zero voltage (resistive loads) or instantaneous (inductive loads) turn-on output

Enquiry Form: https://www.epreston.co.uk/contact/

Home Page: https://www.epreston.co.uk/epblog/

Microminiature Switch for SMT Applications

SMT Switch TCS43

• SMT Type Switch
• High Number of Cycles
• 2.2mm Low Profile Design

The TCS43 is a microminiature SMT tactile switch designed for high-performance applications requiring compact size, reliability, and precise haptic Feedback. With a footprint of just 4.2 × 3.2 mm and a low profile of 2.5 mm, it enables space-efficient PCB layouts without compromising usability.

The switch offers three actuation force options (180 gf, 250 gf, 400 gf; equivalent to 1.76 N to 3.92 N), allowing engineers to fine-tune the user experience depending on application requirements. Its mechanical lifetime of up to 100,000 cycles ensures long-term reliability, even in demanding environments.

Electrical performance supports low-power designs (10 µA to 50 mA, 1–12 VDC), while contact resistance remains ≤100 mΩ for stable signal integrity. The device operates reliably across a wide temperature range (-40 °C to +90 °C), making it suitable for both consumer and medical applications.

Typical use cases include user interfaces such as on/off switching, menu navigation, and parameter selection in high-end consumer electronics, home automation systems, IoT devices, and medical equipment (e.g., blood pressure monitors, ventilators).

The TCS43 combines compact design, robust performance, and flexible actuation characteristics
making it an ideal choice for next-generation interface solutions.

Enquiry Form: https://www.epreston.co.uk/contact/

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7P Series: Surge Protection Devices (SPD)

The 7P Series consists of Type 1 + 2, Type 1, Type 2 and Type 3 surge arresters.

Functions & Features (according to Type):

• Surge arrester suitable for 230 V or 400 V networks
• Single phase systems or three-phase systems
• Replaceable varistor module and encapsulated spark gap modules
• Visual and remote signalling of varistor status
• 35mm rail (EN 60715) mount

Applications:

• Panels for Electrical Distribution
• Control Panels
• Surge Protection
• Road / Tunnel Lighting
• Elevators and Lifts

Enquiry Form: https://www.epreston.co.uk/contact/

Home Page: https://www.epreston.co.uk/epblog/

SMT Half Pitch DIP Switches for Space-Critical Applications

SMT Half Pitch DIP Switch
DTCD, DTCJ

• 1.27 mm half pitch for space saving
• 2.2 mm low profile design
• SMD type terminal
• High number of cycles

The DTCD and DTCJ 1.27 mm pitch DIP switches are ultra-miniature SMD components designed for high-density electronic applications. With a low profile height of just 2.2 mm and up to 46% PCB space savings compared to traditional 2.54 mm solutions, they enable significant footprint reduction without compromising functionality.

Available in Gullwing and J-bend terminations, both versions are optimized for automated SMT assembly, reducing manufacturing complexity and cost. The switches support up to 1000 mechanical cycles and operate reliably across a temperature range of -40 °C to +85 °C. Low contact resistance (≤100 mΩ initial) and stable electrical ratings (up to 100 mA @ 50 V) ensure consistent signal performance.

Typical applications include address setting and configuration in industrial controls, communication systems (e.g., RS485/Modbus), server hardware (BIOS/CMOS), consumer appliances, and medical devices. Combining miniaturization, durability, and cost efficiency, DTCD/DTCJ provide a scalable solution for modern compact electronic designs.

Enquiry Form: https://www.epreston.co.uk/contact/

Home Page: https://www.epreston.co.uk/epblog/