ABB TP401 Electronic ON-Delay Timer Relay

Description

The ABB TP401 is an electronic timer designed for direct front-mounting on ABB A-line and B-line contactors. It provides a reliable ON-delay function with a time setting range from 1 to 40 seconds, adjustable via the top-mounted dial. This compact unit is ideal for applications requiring staggered motor starting or other timed control sequences.

Specifications

• Manufacturer: ABB
• Model: TP401
• Function: ON-Delay Timer
• Time Range: 1 - 40 seconds
• Mounting: Direct front mount on contactor
• Compatibility: ABB A-line and B-line contactors

Application

This timer is commonly used in motor control centers (MCCs), industrial automation panels, and machinery control systems for tasks such as star-delta starting, sequential process control, and load timing.

Country of Origin

This product is typically manufactured in Sweden.

CO2 Impact

Opting for this refurbished ABB TP401 timer instead of a new one prevents the emission of approximately 2.8 kg of CO2. This saving is comparable to the emissions from driving a standard passenger car for 14 kilometers.

Availability

This item is a discontinued but available surplus part. Limited stock. Order now from PLC2Day for expert support and fast delivery.

FAQ

What contactor series is this timer compatible with?

The TP401 is primarily designed for the ABB A-line contactor series (e.g., A9 to A300) and certain older B-line contactors. It is not compatible with modern AF-series contactors.

What does 'ON-delay' function mean?

An ON-delay timer, also known as delay on make, initiates its timing cycle when control voltage is applied. The output contacts change state only after the preset time has elapsed and remain in that state until the control voltage is removed.

What are the supported control voltages for this timer?

The TP series timers are known for their wide-range voltage inputs. While you must always verify the specific label on your unit, they typically support multiple AC/DC voltages such as 24V, 48V, 110-127V, and 220-240V.

Friday, March 13, 2026

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