Cole Hersee – 24059-08-BP (24059-BP) 12V Insulated SPST Continuous Duty Solenoid

Description

Product Overview

The Cole Hersee 12V insulated SPST continuous duty solenoid is built to meet the rigorous demands of modern industrial automation. Its single‑pole single‑throw (SPST) configuration provides straightforward on‑off control, while the insulated housing safeguards against accidental short circuits in high‑voltage environments. The device operates continuously at 12 volts, delivering consistent actuation without overheating, making it suitable for applications that require long‑term reliability. In addition to its electrical performance, the solenoid features a precision‑machined metal case that resists corrosion, dust ingress, and mechanical impact, ensuring that the internal coil remains protected throughout its service life.

Designed with a machined exterior, the solenoid offers superior mechanical strength and resistance to wear. The compact dimensions of 5.5 × 3.4 × 2.5 inches allow easy integration into tight panel spaces, and the lightweight construction of just 9.6 ounces reduces overall system mass. The automatic lift mechanism ensures the plunger returns to its original position without external springs, simplifying installation and maintenance while reducing the number of moving parts that could fail over time. This design choice also contributes to smoother operation at higher cycle rates, which is essential for high‑speed automation lines.

Electrical specifications include a 12 V DC rating, low coil resistance for efficient power consumption, and a continuous duty cycle that permits uninterrupted operation. The insulated coil prevents heat transfer to surrounding components, protecting sensitive circuitry and extending the lifespan of both the solenoid and adjacent hardware. The coil is wound with high‑temperature‑rated wire, and the insulation material is selected to meet IEC standards for thermal stability, ensuring that the solenoid can operate safely in environments ranging from -20 °C to +85 °C.

The solenoid’s exterior is finished with a precision‑machined metal case that provides excellent shielding against dust, moisture, and mechanical impact. This robust construction complies with industry standards for durability, ensuring the unit can withstand the harsh conditions typical of manufacturing floors, processing plants, and outdoor installations. The case is treated with a corrosion‑resistant coating that prolongs service life even when exposed to humid or chemically aggressive atmospheres.

Rigorous quality testing validates the solenoid’s performance under extreme temperature variations and repeated cycling. Each unit undergoes a full load test to confirm its ability to maintain actuation force over extended periods, guaranteeing that customers receive a product that meets or exceeds the expectations set by the Cole Hersee brand. Additional tests include insulation resistance verification, dielectric strength assessment, and mechanical endurance trials that simulate years of operation in a single test cycle.

Usage

The solenoid is ideal for controlling pneumatic and hydraulic valves in automated assembly lines, where precise timing and reliable actuation are critical. Its 12 V rating aligns with common control panel power supplies, allowing seamless integration with existing PLCs and relay modules without the need for additional voltage conversion equipment. Engineers often pair this solenoid with flow sensors and pressure transducers to create closed‑loop control systems that automatically adjust valve positions based on real‑time process data.

In material handling equipment such as conveyors, feeders, and robotic grippers, the solenoid’s quick response time and automatic lift feature enable rapid cycle rates, improving throughput while reducing wear on moving parts. The insulated design also minimizes electromagnetic interference, preserving signal integrity in densely packed control cabinets. When used in high‑speed sorting machines, the solenoid can achieve actuation times under 50 ms, making it suitable for applications that demand swift and repeatable motion.

For environmental monitoring stations and process control systems, the solenoid can operate continuously to regulate flow meters, venting devices, and safety shut‑off valves. Its compact size and low weight make it easy to mount on brackets or directly onto printed circuit boards, offering flexibility in system layout and reducing overall footprint. The device’s low power consumption also contributes to energy‑efficient designs, which is increasingly important in sustainability‑focused projects.

The device’s durability makes it suitable for outdoor applications, including irrigation control, waste‑water treatment, and agricultural machinery, where exposure to moisture and temperature fluctuations is common. Proper sealing and the machined exterior protect the internal coil from corrosion, ensuring long‑term functionality even in harsh climates. Field technicians appreciate the solenoid’s straightforward wiring diagram, which reduces installation time and minimizes the potential for wiring errors in remote locations.

Why Choose Us

Cole Hersee has a legacy of over three decades in manufacturing high‑quality solenoids and relays, and this model reflects the company’s commitment to engineering excellence. Each solenoid is produced in a controlled facility where strict tolerances are maintained, guaranteeing consistent performance across every batch. The company’s continuous improvement program incorporates feedback from OEMs and system integrators, ensuring that design refinements directly address real‑world challenges encountered in the field.

Our continuous duty design eliminates the need for intermittent cooling periods, reducing system downtime and simplifying maintenance schedules. The automatic lift mechanism further reduces the number of components required in the field, lowering the risk of mechanical failure and decreasing total cost of ownership. Customers benefit from a lower parts inventory because the solenoid’s integrated lift eliminates the need for separate return springs or auxiliary actuators.

We provide comprehensive technical documentation, including wiring diagrams, performance curves, and installation guidelines, to assist engineers in integrating the solenoid into a wide range of applications. In addition, our dedicated support team is available to answer technical questions and provide troubleshooting assistance throughout the product’s lifecycle. This proactive service model helps users resolve issues quickly, keeping production lines running smoothly.

All units are backed by a manufacturer’s warranty that covers material defects and workmanship, reinforcing confidence in the durability and reliability of the solenoid. Our commitment to after‑sales service ensures that customers receive prompt assistance, replacement parts, and updates when needed. For large‑scale deployments, we also offer volume‑pricing programs and priority shipping options to meet tight project timelines.

Key Features

• 12 V DC operation with continuous duty rating for nonstop performance
• Insulated coil design prevents heat transfer and protects surrounding circuitry
• Automatic lift mechanism simplifies installation and eliminates external springs
• Machined metal exterior provides superior durability against dust, moisture, and impact
• Responsive customer support and warranty coverage for peace of mind

FAQ

What is the maximum switching frequency for this solenoid?

The solenoid can reliably switch at frequencies up to 5 Hz under normal load conditions, making it suitable for most industrial automation cycles.

Can the solenoid be used in hazardous locations?

While the unit is insulated and robust, it is not certified for explosive atmospheres. For hazardous locations, a version with appropriate ATEX or IECEx certification should be selected.

What wiring gauge is recommended for the 12 V coil?

We recommend using 20‑AWG wire for distances up to 10 feet. For longer runs, a larger gauge such as 18‑AWG helps reduce voltage drop and maintain consistent coil performance.

Is there a replacement part number for the plunger assembly?

Yes, the plunger assembly can be ordered separately using part number 24059‑PLUG, ensuring quick repairs without replacing the entire solenoid.