33673 | MN undervoltage release, Compact NS 630b to Compact NS 3200, 380 VAC to 480 VAC 50/60 Hz – Schneider Electric

Name: Schneider Electric MN Undervoltage Release 33673
Brand: Schneider Electric
SKU: 33673
Price: 7647.90 INR
Availability: InStock

SKU: 33673

Original price was: ₹14,430.00.Current price is: ₹7,647.90. Excl. GST

In stock

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Looking for the MN undervoltage release, Compact NS 630b to Compact NS 3200, 380 VAC to 480 VAC 50/60 Hz? This genuine Schneider Electric mccb from the ComPacT range is built for reliable circuit protection and isolation, combining proven reliability with full compliance to applicable IEC/IS standards. Key ratings include 380V AC. Order part number 33673 from myelectric.in — a trusted Schneider Electric supplier offering competitive pricing, GST billing, and shipping across India and overseas.

📋 Technical Specifications

Product
Brand	Schneider Electric
Part Number / SKU	33673
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	380…480 V AC 50/60 Hz
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 VA
Accessory / separate part category	Spare part for MasterPact NT Spare part for MasterPact NT NAVY Spare part for MasterPact NW Spare part for MasterPact NW NAVY 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	3.5 cm
Package 1 Width	6.2 cm
Package 1 Length	8.2 cm
Package 1 Weight	152.0 g
Unit Type of Package 2	BB1
Number of Units in Package 2	10
Package 2 Height	9.0 cm
Package 2 Width	13.2 cm
Package 2 Length	18.5 cm
Package 2 Weight	1.568 kg
Unit Type of Package 3	S03
Number of Units in Package 3	120
Package 3 Height	30.0 cm
Package 3 Width	30.0 cm
Package 3 Length	40.0 cm
Package 3 Weight	19.243 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: What trip unit type does the 33673 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 33673 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: Can the 33673 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 is the difference between an MCCB and a standard MCB — and why use the 33673?

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 33673 when the application specifically requires mccb characteristics.