ABB 1SVR011718R2500 – Modular Timer Relay for Industrial Automation Control

If you’re working on panel builds or machine control systems that require precise time sequencing, the ABB 1SVR011718R2500 typically stands out as a solid pick. It’s a plug-in modular timer relay designed to handle timing functions in automation setups—things like delayed starts, interval control, or sequential operations in HVAC, packaging lines, or conveyor systems. From my experience, it’s one of those components that doesn’t draw attention when it’s working right—which is exactly what you want.

Key Features

• Precision timing function – Offers adjustable time ranges from 0.1 seconds to 100 hours depending on variant, making it flexible across fast-cycle and long-duration processes.
• Plug-in design with exchangeable socket – You might notice that this makes field replacements faster and reduces downtime during maintenance or upgrades.
• LED status indication – One thing I appreciate is the clear visual feedback for power and output state, which helps during troubleshooting without needing extra tools.
• Wide supply voltage range (24–240 V AC/DC) – Seems to be particularly useful in mixed-voltage environments where standardization hasn’t fully taken place across machines.
• DIN rail mounting (TS35) – Fits standard control cabinets without modification, aligning well with typical industrial panel layouts.

Technical Specifications

Application Fields

This relay shows up frequently in applications where timing logic needs to be reliable but cost-effective. In many cases, it’s used in HVAC fan delay controls, pump alternation circuits, or safety interlocks on production machinery. I’ve seen it deployed in water treatment panels, food processing equipment, and even in some elevator control cabinets where simple time-based coordination is needed. It’s not meant for complex PLC-level tasks, but more for offloading basic timing duties so higher-level controllers can stay focused.

Advantages & Value

The main value here lies in reliability and ease of integration. Since it uses a standard footprint and plug-in base, swapping units in the field takes minutes. That kind of serviceability tends to reduce labor costs over time. Also, because it supports both AC and DC voltages, you can keep fewer spares on hand across different machine types. Procurement teams typically appreciate that—it simplifies inventory without sacrificing compatibility. And while it’s not the cheapest timer on the market, the failure rate seems low under normal conditions, which matters more than upfront savings in critical processes.

Installation & Maintenance

Mounting is straightforward—just snap it onto a TS35 rail. Make sure the cabinet has adequate ventilation if ambient temperatures exceed 40°C, since performance can degrade otherwise. Wiring should use 0.2–2.5 mm² stranded conductors with ferrules recommended for vibration-prone environments. One small caveat: always de-energize the circuit before plugging or removing the module. Even though the contacts are rated for switching, hot-plugging may shorten lifespan. For maintenance, there’s no user-serviceable parts inside, but checking for loose terminals every 6–12 months helps prevent issues. Firmware updates aren’t applicable—it’s an electromechanical device—but verifying timing accuracy annually with a test load is a good practice.

Quality & Certifications

It carries CE, UL, and RoHS certifications, so it meets core requirements for use in North America and the EU. The build quality feels consistent with ABB’s usual standards—solid housing, clear labeling, and robust terminal blocks. We offer a 365-day warranty against manufacturing defects, which covers replacement if it fails under proper operating conditions. Delivery usually takes about a week if in stock, though it can stretch to four weeks for backordered units. Orders require 50% advance payment, with full balance due before shipment. We ship via FedEx, UPS, or DHL depending on destination and urgency.