33668 | MN undervoltage release, Compact NS 630b to Compact NS 3200, 24VDC to 30VDC, 24 VAC 50/60 Hz – Schneider Electric

Name: Schneider Electric 33668 MN Undervoltage Release 24VDC
Brand: Schneider Electric
SKU: 33668
Price: 99.42 EUR
Availability: InStock

SKU: 33668

Original price was: €187.59.Current price is: €99.42. Excl. GST

In stock

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Sourced through authorised channels, the Schneider Electric 33668 mccb from the ComPacT range delivers dependable performance for reliable circuit protection and isolation. Key ratings include 24V AC. myelectric.in stocks the MN undervoltage release, Compact NS 630b to Compact NS 3200, 24VDC to 30VDC, 24 VAC 50/60 Hz for contractors, panel builders, and project buyers — buy online with GST invoice, or request a bulk quote for domestic supply and export to UAE, Singapore, UK, USA, Sri Lanka and more.

📋 Technical Specifications

Product
Brand	Schneider Electric
Part Number / SKU	33668
Category	MCCB
Main
Range	ComPacT
Range of product	ComPacT NS630b…1600 new generation ComPacT NS1600b…3200 new generation
Device short name	MN
Product or component type	Voltage release
Device application	Control
Voltage release type	Opening coil Undervoltage release
Control type	Standard
[Uc] control circuit voltage	24 V AC 50/60 Hz 24…30 V DC
Circuit breaker mounting mode	Fixed
Range compatibility	ComPact ComPact NS630b…1600 ComPact ComPact NS1600b…3200
Complementary
Operating threshold	0.35…0.7 x Un opening 0.85 x Un closing
Response time	90 ms +/- 5 % for Compact NS630b…1600 90 ms +/- 5 % for Compact NS1600b…3200 40 ms +/- 5 % for MasterPact NT 90 ms +/- 5 % for MasterPact NW
Supply holding power	4.5 W
Accessory / separate part category	Spare part for MasterPact NT Spare part for MasterPact NW Spare part for ComPacT NS630b…1600 new generation Spare part for ComPacT NS1600b…3200 new generation
Packing Units
Unit Type of Package 1	PCE
Number of Units in Package 1	1
Package 1 Height	3.500 cm
Package 1 Width	6.000 cm
Package 1 Length	8.200 cm
Package 1 Weight	154.000 g
Unit Type of Package 2	BB1
Number of Units in Package 2	10
Package 2 Height	9.000 cm
Package 2 Width	13.000 cm
Package 2 Length	18.500 cm
Package 2 Weight	1.585 kg
Unit Type of Package 3	S02
Number of Units in Package 3	60
Package 3 Height	15.000 cm
Package 3 Width	30.000 cm
Package 3 Length	40.000 cm
Package 3 Weight	9.802 kg
Contractual warranty
Warranty (in months)	18

⚡ Key Features

Thermal-magnetic trip unit — factory-calibrated overload and short-circuit protection; suitable for standard feeder circuits without electronic adjustment.
Rotary handle with padlocking points — LOTO compliant; handle locks in OFF position with up to 3 padlocks, preventing accidental energisation during maintenance.
Manufactured to IEC 60947-2 / IS 13947-2 — complies with the applicable Indian BIS and IEC international standards for this product category.
BIS certified, CE marked, RoHS compliant — meets Indian regulatory requirements for use in government, commercial, and industrial electrical installations.
Genuine authorised Schneider Electric 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: Can the 33668 be motorised for remote switching and automation?

A: Yes. Schneider Electric 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 33668 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 33668 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 Schneider Electric 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 33668?

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 33668 when the application specifically requires mccb characteristics.