DU400N/DN2/DN3B/DN3 MCCB Accessory Auxiliary+Trip Alarm Contact (1C/O+1C/O Right) | L&T – CM99804OOOO

Name: L&T MCCB Auxiliary & Alarm Contact | CM99804OOOO
Brand: Lauritz Knudsen (L&T)
SKU: CM99804OOOO
Price: 2015.00 INR
Availability: InStock

SKU: CM99804OOOO

Original price was: ₹3,250.00.Current price is: ₹2,015.00. Excl. GST

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The CM99804OOOO CM99804OOOO is a mccb, engineered for reliable circuit protection and isolation in demanding Indian and international installations. Buy the DU400N/DN2/DN3B/DN3 MCCB Accessory Auxiliary+Trip Alarm Contact (1C/O+1C/O Right) | L&T online at myelectric.in with GST invoice, genuine-product assurance, and fast delivery across India — bulk and worldwide export enquiries welcome.

📋 Technical Specifications

Parameter	Value
Brand	CM99804OOOO
Part Number / SKU	CM99804OOOO
Category	MCCB
Contact Configuration	1 CO (Changeover)
Rated Operational Voltage (Ue)	415V AC (50/60 Hz)
Mounting	Fixed, front connected
Rated Frequency	50/60 Hz
Standard	IEC 60947-2 / IS 13947-2
Certifications	BIS certified where applicable

⚡ Key Features

Thermal-magnetic trip unit — factory-calibrated overload and short-circuit protection; suitable for standard feeder circuits without electronic adjustment.
Manufactured to IEC 60947-2 / IS 13947-2 — complies with the applicable Indian BIS and IEC international standards for this product category.
BIS certified where applicable — meets Indian regulatory requirements for use in government, commercial, and industrial electrical installations.
Genuine authorised CM99804OOOO product — sourced directly from the official distribution network with full manufacturer traceability and warranty.
GST invoice provided for India orders — valid for corporate procurement, government project orders, and public tender supply via myelectric.in.
Worldwide export available — UAE, Singapore, UK, USA, Sri Lanka & more. Contact +91 94814 00316 for bulk pricing and international shipping.

❓ Frequently Asked Questions

Q: What does the 1 CO (Changeover) contact configuration on the CM99804OOOO mean?

A: CO (Change Over) contacts switch between two circuits — the common terminal connects to either NO or NC depending on the device state. Used for dual-purpose indication or reversing circuits.

Q: Can the CM99804OOOO be motorised for remote switching and automation?

A: Yes. CM99804OOOO MCCBs in this series support rotary handle adaptation and motorised operating mechanisms as accessories, enabling remote ON/OFF switching via PLC, SCADA, or BMS. Motorised MCCBs are used for automatic load management and remote trip in automated distribution systems.

Q: What trip unit type does the CM99804OOOO use — thermal-magnetic or electronic?

A: Refer to the product label or datasheet for the exact trip unit specification. The trip unit determines adjustability and protection accuracy.

Q: Is the CM99804OOOO suitable for use as a motor branch circuit protector (Type E coordination)?

A: MCCBs used for motor branch circuit protection must be coordinated with the downstream overload relay for Type 2 coordination (no damage to contactor or relay on short-circuit). Verify the CM99804OOOO coordination table for the specific contactor-overload-MCCB combination to confirm Type 1 or Type 2 coordination is achieved.

Q: What is the difference between an MCCB and a standard MCB — and why use the CM99804OOOO?

A: A standard MCB protects against overload and short-circuit only. An MCCB handles much higher fault levels and larger current ratings — MCCBs are rated up to 1600A with 25–200kA breaking capacity, compared to MCBs which are capped at typically 125A and 10kA. Choose the CM99804OOOO when the application specifically requires mccb characteristics.