Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
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.
£67.48
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.
| Supply Voltage | 380–500 V AC | |
|---|---|---|
| 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 | |
| Coil / Supply Voltage | 380 V AC, 400 V AC, 415 V AC, 440 V AC | |
| IP Rating | IP20, IP40 | |
| 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 |
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.
