3RV27111DD10 | circuit breaker frame size S00 for system protection with approval circuit breaker UL 489, CSA C22.2 no. 502 thermal overload release 3.2 A shortcircuit release 42 A screw terminal standard switching capacity Siemens

Name: 3RV27111DD10 | circuit breaker frame size S00 for system protection with approval circuit breaker UL 489, CSA C22.2 no. 502 thermal overload release 3.2 A shortcircuit release 42 A screw terminal standard switching capacity Siemens - myelectric.in
Brand: Siemens
SKU: 3RV27111DD10
Price: 13943.60 INR
Availability: OutOfStock

SKU: 3RV27111DD10

Original price was: ₹31,690.00.Current price is: ₹13,943.60. Excl. GST

Out of stock

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📋 Technical Specifications

Parameter	Value
Brand	Siemens
Part Number / SKU	3RV27111DD10
Category	Overload Relay
Series / Model	3RV
Contact Configuration	2 NO (Normally Open)
Current Rating	3.2 A
Standard	IEC 60947-4-1, IEC 60947-2
Certifications	BIS certified, CE, cULus (select models)

⚡ Key Features

Adjustable current range 3.2 A — set to the motor nameplate FLC for accurate overload detection; range covers multiple motor sizes from a single relay model.
Bimetal thermal element with phase-loss sensitivity — independently monitors each phase; trips if any phase carries more than ~115% of the set current, or on complete phase failure.
Normally open (NO) and normally closed (NC) auxiliary contacts built in — NO contact wired to motor run indicator; NC contact wired to PLC fault input or motor starter stop circuit.
Manufactured to IEC 60947-4-1 / IS 13947-4-1 — 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 motor HP/kW is covered by the 3.2 A setting on the 3RV27111DD10?

A: The 3.2 A current range covers motors with full-load current (FLC) within that band. Set the overload relay to the motor’s nameplate FLC — not the maximum of the range — to ensure correct trip time and avoid nuisance tripping on motor starting inrush.

Q: What does the 2 NO (Normally Open) contact configuration on the 3RV27111DD10 mean?

A: These contacts change state when the device is operated or energised. Size the contact for the actual switched load — pilot duty ratings are typically lower than the main contact rating.

Q: Does the 3RV27111DD10 provide single-phase (phase loss) protection?

A: Siemens thermal overload relays include single-phase sensitivity: if one phase is lost, the remaining phases carry higher current, causing the bimetal to heat and trip within the specified time. For critical motors, add a dedicated phase-loss relay for faster response independent of load — overload relay phase-loss protection is load-dependent and may take minutes to trip at light load.

Q: How do I set the 3RV27111DD10 to protect a motor without causing nuisance trips on starting?

A: Set the thermal overload dial to the motor’s nameplate full-load current (FLC) — ensure the FLC is within the 3.2 A range of this relay. For star-delta starters, set the overload relay to 58% of motor FLC (line current in delta = FLC × 0.58). Allow 10 trips for the relay’s thermal memory to stabilise before adjusting the setting.

Q: What is the difference between an Overload Relay and a standard MCB — and why use the 3RV27111DD10?

A: A standard MCB protects against overload and short-circuit only. An Overload Relay provides thermal overload protection calibrated to motor FLC, protecting the motor from sustained overloads that would destroy windings before a standard MCB trips. Choose the 3RV27111DD10 when the application specifically requires overload relay characteristics.

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