Achieve Immediate Response in a Fault-Interrupting Device

These large latching solenoids with high latching force were designed for a manufacturer of high voltage power distribution equipment to disconnect power quickly to prevent equipment damage.

Customer Problem

A manufacturer of high voltage power distribution equipment needed to actuate a fault-interrupting device while switching functions in their high voltage equipment. This device would disconnect power if a fault could not be cleared immediately or maintenance needed to be performed.

In order to avoid equipment damage, the actuation solution needed to be durable with a high latching force to actuate immediately, allowing the power to disconnect quickly.

The TLX Solution

We designed several large latching solenoids that have a high latching force ranging from 100-300 lbs. These heavy-duty solenoids used residual magnetism, not constant power, to hold the latched position. When the system detects a fault, a short pulse of power causes the solenoid to de-latch, activating the fault interrupter. Once maintenance is complete or the fault is cleared, another short pulse of opposite polarity causes the solenoid to re-latch. This solenoid is direct-acting and temperature stable with a fast response time.

View Design Solution

Large Latching Solenoid

Stroke: Up to 16.5 mm

Pull force: Up to 223 N

Latching force: Up to 1334 N

Supply voltage: 48 Vdc

Response times: <30 ms

Coil resistance at 20°C: 1.25 Ω

Transition velocity at switching: > 1 m/s

Durability: > 100K cycles

Momentary current pulse: Up to 40 A

All TLX components are customized to fit system requirements, meaning technical specifications are unique to each customer and design. Examples given on our website are for illustration purposes only.

Working with TLX

Experienced partner of industry leaders, first-tier suppliers, and OEMs
Direct access to our design and engineering team
Localized production in USA and China
Dependable single-source solution from design to delivery

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Our Process

Step 1 / Initial Review

Our engineering team works directly with you to determine the viability of your program and identify the best solution based on your specifications.

Step 2 / Quote

Quotes include all costs related to your project - tooling, prototype, piece part, production and project specific costs.

Step 3 / Design Review & Prototypes

Our engineering team reviews the design with you and makes any adjustments needed. Prototypes are built according to design specifications for testing.

Step 4 / Testing

Prototypes are tested according to your specifications, with all relevant test data provided to you for evaluation.

Step 5 / APQP

DFMEA’s, PFMEA’s, control plans and process flow diagrams are started to drive the product intent design.

Step 6 / Pre-Production

Working drawings are developed for production. A second prototype build and a set of production parts are made from tooling and thoroughly tested.

Step 7 / PPAP/Production

The final design along with the PPAP (Production Part Approval Process) is developed and the new product enters production.

Step 8 / Ongoing Improvements

Our team collaborates with you to continue making improvements to the product to best meet your needs, increasing efficiency and reducing cost.

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