LZSPT78740 | Siemens Plug-in Socket For PT Relay 4 C/O Screw Terminal – Siemens

Name: LZSPT78740 | Siemens Plug-in Socket For PT Relay 4 C/O Screw Terminal - Siemens - myelectric.in
Brand: Siemens
SKU: LZSPT78740
Price: 2240.00 INR
Availability: OutOfStock

SKU: LZSPT78740

₹2,240.00 Excl. GST

Out of stock

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Sourced through authorised channels, the Siemens LZSPT78740 relay socket delivers dependable performance for motor control and switching. myelectric.in stocks the LZSPT78740 | Siemens Plug-in Socket For PT Relay 4 C/O Screw Terminal 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

Parameter	Value
Brand	Siemens
Part Number / SKU	LZSPT78740
Category	Relay Socket
Contact Configuration	4 CO (Changeover)
Rated Frequency	50/60 Hz
Mounting	35mm DIN rail or plug-in socket
Standard	IEC 60947-5-1
Certifications	BIS certified, CE, cULus (select models)

⚡ Key Features

4 CO (Changeover) contact arrangement — all contacts independently switchable up to the contact voltage rating.
Plug-in format — drop-in replacement into standard relay socket base; all wiring connects to socket terminals and remains intact when the relay body is removed for testing or replacement.
Manufactured to IEC 60947-5-1 — complies with the applicable Indian BIS and IEC international standards for this product category.
BIS certified, CE, cULus (select models) — meets Indian regulatory requirements for use in government, commercial, and industrial electrical installations.
Genuine authorised Siemens 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 4 CO (Changeover) contact configuration on the LZSPT78740 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: How do I test the LZSPT78740 relay in the field without a signal source?

A: Most Siemens relays can be manually forced using the test button (if fitted) — this mechanically closes the relay contacts without energising the coil, allowing functional testing of the controlled circuit. For coil testing, use a multimeter to measure coil resistance (typically 500–2000Ω for AC coils at rated voltage) and compare with datasheet values.

Q: Can the LZSPT78740 relay be mounted on a DIN rail socket for easy replacement?

A: Yes. The LZSPT78740 is a plug-in relay designed for use with a matching relay socket (check RXZ or equivalent series), enabling tool-free relay replacement without disturbing control wiring. Label the socket wiring clearly to enable fast field replacement.