Call Us Today 01706 242050
TMSTA440 - TIME RELAY S/D 380/440V 50/60

TMSTA440 – TIME RELAY S/D 380/440V 50/60

The Lovato TMSTA440 is a TMST series star-delta time relay engineered for dependable motor starting.

SKU: TMSTA440MPN: TMSTA440
Price
List Price £112.47 ex VAT
Your Price (ex VAT)
£112.47
Manufacturer Lead Time Please contact us for a delivery time before you order
Get the best trade prices Trade exclusive

Create a trade account to unlock exclusive pricing, special offers and more.

Sign up for a trade account Quick & easy setup
SUBTOTAL (EX VAT) £112.47
Trade pricing is personalised to your account

Manufacturer Lead Time

£112.47

Lovato TMSTA440 Star-Delta Starting Time Relay 380-440VAC Multiscale DIN Rail Timer

The Lovato Electric TMSTA440 is a specialised star-delta starting time relay designed for controlling reduced-voltage motor starting sequences in industrial automation applications. Featuring multiscale timing adjustment, 380-440VAC supply compatibility, potentiometer programming, and modular DIN rail mounting, the TMSTA440 provides reliable control for three-phase induction motor starters.

Product Overview

The Lovato TMSTA440 is part of the TM series of modular electronic time relays and is designed specifically for star-delta motor starting applications. The relay controls the timing sequence between star connection starting and delta operation, helping reduce motor starting current and providing smoother motor acceleration. The unit operates from a 380-440VAC supply, features adjustable timing via front potentiometers, and mounts on a standard 35mm DIN rail.

Key Features

  • Manufacturer: Lovato Electric
  • Model Number: TMSTA440
  • Product Type: Star-Delta Starting Time Relay
  • Function: Star-delta motor starting control
  • Supply Voltage: 380-440VAC
  • Multiscale timing adjustment
  • Front potentiometer programming
  • 35mm DIN rail modular mounting
  • Two normally open delayed relay outputs
  • LED status indication
  • Screw terminal connections
  • Compact one-module housing design

Applications

  • Three-phase induction motor starters
  • Industrial automation systems
  • Pump and compressor control panels
  • Motor control centres
  • Machine automation equipment
  • Electrical control cabinets

Why Choose Lovato TMSTA440?

The Lovato TMSTA440 provides a reliable and compact solution for managing star-delta motor starting sequences. Its adjustable timing, robust relay outputs, DIN rail mounting, and dedicated star-delta function make it suitable for professional motor control applications requiring accurate switching control.

Technical Specifications

Tick the specs you need, then view products that match.

Timing Range 0.1 s – 10 min
Mounting Type DIN rail
Terminal Type Screw
Device Type Single-function timer
Timing Function Star-delta
Switching Current (A) 8 A
Voltage 440 V
Specification Details Brand Lovato Electric
Part Number TMSTA440
Product Type Time Relay
Function Star-Delta Starting
Supply Voltage 380-440VAC
Frequency 50/60Hz
Timing Range 0.1s to 10min
Programming Method Potentiometers
Relay Outputs 2 Normally Open Contacts
Contact Rating 8A
Mounting Type 35mm DIN Rail Mounting
Terminal Type Screw Terminals
Module Width 17.5 mm
Dimensions 17.5 x 104.7 x 64.9 mm
Operating Temperature -20°C to +60°C
Protection Rating IP40 Front / IP20 Terminals
Weight 90 g
EAN 8013975154847
HS Code 91070000
Coil / Supply Voltage 380 V AC, 400 V AC, 415 V AC, 440 V AC
IP Rating IP20, IP40

Frequently Asked Questions

What is the Lovato TMSTA440 used for?

The Lovato TMSTA440 is used to control star-delta motor starting sequences by managing the transition timing between star and delta connections.

What voltage does the Lovato TMSTA440 operate on?

The Lovato TMSTA440 operates with a 380-440VAC supply voltage.

What is the timing range of the Lovato TMSTA440?

The relay provides adjustable timing from 0.1 seconds up to 10 minutes.

How is the Lovato TMSTA440 installed?

The Lovato TMSTA440 is designed for modular installation on a standard 35mm DIN rail.

● Service Agreements

Credit Accounts

Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.

 Priority sourcing and supply support

 Flexible payment terms for qualifying organisations

 Support for engineering, maintenance, and operations

500 +

Stock lines ready to ship

1,000 +

Same day dispatches

3500 +

Customers supported

28 

Trusted Manfacturers

● frequently asked questions

Common questions about our products and support

 

At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.

What product ranges do you supply

We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products. 

Can you help specify the correct part?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

Do you have stock for urgent orders?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

What are your delivery times and costs?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

What about warranties, returns and faulty items?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

● latest blog

Discover  our latest insights and
expert advice

From a Simple Idea to Small Business of the Year: The LED Controls Story So Far…

From a Simple Idea to Small Business of the Year: The LED Controls Story So Far…

by | Aug 11, 2026 |

LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.

LED Controls: Danfoss Drives Authorised Partner

LED Controls: Danfoss Drives Authorised Partner

by | Jan 17, 2026 |

2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...

LED Controls: Your Complete Control Panel Solution

LED Controls: Your Complete Control Panel Solution

by | Jan 17, 2026 |

2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...