Your go-to guide brought to you by Shansen Enterprises, Authorized ABB Channel Partner
Introduction
Hey there! If you’re on the hunt for a reliable auxiliary contactor relay for your control circuits, you’ve probably come across the ABB N40E. Whether you’re an automation engineer, panel builder, or facility manager, these FAQs will walk you through everything you need to know—from specs and compatibility to installation tips and maintenance. Let’s dive in!
1. What exactly is the ABB N40E Contactor Relay?
The ABB N40E is a four-pole auxiliary contactor relay designed to switch auxiliary and control circuits in industrial applications. It features mechanically linked contact elements and is AC-operated via a laminated magnetic circuit. In other words, it’s your go-to for reliable switching in everything from motor control panels to HVAC systems.
2. What are the key technical specifications?
Here’s a quick rundown of the N40E’s main specs:
Ambient storage temperature: –60 °C to +80 °C
Conventional free-air thermal current (Ith): 16 A (at IEC 60947-5-1, q = 40 °C)
Rated control circuit voltage (Uc): 230–240 V 50 Hz / 240–260 V 60 Hz
Coil consumption: 8 VA (holding at max. rated voltage, 50 Hz)
Rated operational voltage (Um): 690 V (main circuit)
Rated operational current:
DC-13 (125 V): 0.55 A (closed) / 69 A (make)
AC-15 (220/240 V): 4 A
Rated breaking capacity: 10 × Ie (AC-15)
Operate time: 4–11 ms (between coil de-energization and NO contact opening)
Rated frequency limits: 25–400 Hz
Number of aux contacts (NO): 4
Mechanical dimensions: 78 mm (W) × 79 mm (L) × 47 mm (H)
Package gross weight: 0.34 kg
Rated insulation voltage (Ui): 600 V (UL/CSA)
3. What accessories are available?
ABB offers a wide range of accessories to customize the N40E for your needs:
Mounting adapters for DIN-rail or screw mounting
Auxiliary contact blocks for additional NO/NC contacts
Mechanical interlocks to prevent simultaneous operation of multiple contactors
Electronic timers for on-delay, off-delay, and pulse functions
Surge suppressors to protect coils from voltage spikes
4. Which systems is the N40E compatible with?
Because the N40E is part of ABB’s extensive auxiliary contactor range, it seamlessly integrates with:
Any IEC 60947-5-1-compliant equipment
Auxiliary contactors (same N-series)
Motor starters and control panels
Automation systems in machinery and process industries
5. How do I install the ABB N40E?
Testing: Energize the coil at rated voltage and verify contact operation with a multimeter.
Mounting: Clip onto a 35 mm DIN rail or use screw terminals on a flat surface.
Wiring:
Connect your control circuit wires to the coil terminals labeled A1 (+) and A2 (–).
Main circuit connections go to terminals 1–4 (input) and 5–8 (output).
Accessories: Snap on auxiliary blocks or interlocks before final wiring.
6. Any tips for maintenance and troubleshooting?
Listen for chatter: Rapid, repeated clicking may indicate coil or supply issues.
Keep it clean: Dust and debris can affect contact performance. Use compressed air or a soft brush.
Inspect contacts: Look for pitting or welding—replace blocks if wear exceeds 10 % of silver thickness.
Check coil voltage: Ensure you’re supplying within 230–240 V 50 Hz or 240–260 V 60 Hz. Over- or under-voltage can prevent proper operation.
7. What are the real-world applications?
Renewable energy inverters
Packaging machinery control
Conveyor system starters
Building management (lighting, HVAC)
Process control in chemical plants
8. Why choose ABB N40E over competitors?
Customization: Vast accessory range to tailor functions.
Proven reliability: Mechanical design optimized over decades.
Global support: ABB’s service network in India and worldwide.
Easy integration: IEC compliance ensures plug-and-play with most control gear.
9. How can I get a quote or learn more?
Ready to upgrade your control circuits? Reach out to Shansen Enterprises—ABB’s authorized channel partner:
- WhatsApp: +919442633195
- Email: info@shansen.com
- Phone: +91-94426-33195
Our team will help you pick the right variant, accessories, and answer any additional questions.
Or simply tap the Gqt Quote Via WhatsApp for more info: ABB N40E Contactor Relay – Shansen Enterprises
10. Where can I find technical documentation?
ABB’s official product page and datasheets are available on the ABB website. For direct downloads and personalized support, contact Shansen Enterprises.
Still have questions? Drop us a line on WhatsApp +919442633195 or email, and we’ll get you the answers—and the perfect ABB N40E relay—for your next project!
