08045803208

GST : 27AABPJ8217B1Z4

Our Products

Minilec

Selec Process Instruments

PLA Products

Wago Products

Minilec Phase Failure Relays

Minilec Current Monitoring Relays

Minilec Voltage Monitoring Relays

Minilec Motor Protection Relay

Minilec Ground Fault Monitoring Relays

Minilec Frequency Monitoring Relays

Minilec Power Monitoring Relays

Minilec Voltage Scanners and Controllers

Minilec Motor Protection Relays

Minilec Microprocessor Pump Automation System

Minilec Temperature Protection Relay

Minilec Electronic Delay Timers

Minilec Liquid Level Controllers

Minilec Soft Starters

Minilec Alarm Annunciators

Minilec Agri Sector Products

Minilec Power Line Transducers

Minilec Phase Failure Relays D1 HL S1

Minilec Phase Failure Relays D1 HL S1 Specification

Working Temperature
-10C to +55C

Contact Resistance
<50m

Contact Material
Silver Alloy

Power Consumption
<2VA

Coil Power
Low Power Consumption

Coil Voltage
Internal to supply voltage

Ambient Temperature
-10C to +55C

Contact Form
1 C/O (SPDT)

Protect Feature
Phase Failure, Phase Sequence, Phase Unbalance

Mechanical Life
>10 Million Operations

Dielectiric Strength
2kV AC for 1 Minute

Product Type
Phase Failure Relay

Insulation Resistance
>=100M at 500V DC

Theory
Electromagnetic Relay

Usage
Phase Protection for Motors and Equipment

Contact Load
5A at 250V AC (Resistive)

Operate Time
About 200ms

Terminal Type
Screw Terminal

Rated Voltage
415V AC, 3 Phase

Supply Terminal
L1, L2, L3

Size
Compact

Color
White & Blue

Dimension (L*W*H)
77mm x 51mm x 110mm

Weight
Approx. 120g

Mounting Type
DIN Rail Mountable

Enclosure Material
Flame Retardant ABS Plastic

Response Time
Fast Response <300ms

LED Indication
Yes, for Status Indication

Storage Temperature
-20°C to +70°C

Model
D1 HL S1

Frequency
50/60 Hz

Relative Humidity
Up to 95% non-condensing

About Minilec Phase Failure Relays D1 HL S1

Minilec Phase Failure Relays

OVERVIEW :-

Phase Failure, Unbalance,

Phase Sequence,

Under voltage, Over Voltage,

Auto reset, Fixed Unbalance Setting

Fixed UV/OV settings,

2 CO output relay

TECHNICAL SPECIFICATION :-

Supply Voltage

100-110-120/220-230-240/380-415-440V AC+20,-25%,

System	:	48-63 Hz, Selectable by Front Knob
Auxillary	:	Built In

Output Contacts		:	2 CO

Trip Setting(Volts)
	Phase Sequence	:	Yes
	Phase Unbalance	:	10% (Fixed)

Under Voltage	For 380-440V AC For 220-240V AC For 110 V AC	75% of system supply (Fixed)
Over Voltage	For 380-440V AC For 220-240V AC For 110 V AC	120% of system supply (Fixed)

Trip Time Delay

	On Phase Failure	:	3.5±1.5 secs. [Fixed]
	On UV/OV	:	Less than 2 secs.

Resetting Mode

Auto


Weight	:	200 gms.

Dimensions (mm)

	Overall (L x W x D)	:	76 x 30.5 x 117.5
	Mounting (L x W)	:	68 centre to centre / 35 mm rail Mounting

Note:

Wherever not specified Contact Rating : 5A @ 230 V AC (resistive)

* CE marked products available on request.

APPLICATION :-

Suitable for monitoring 3 Ph. System supply from MAINS & used by motor load -
	AC & R Chiller compressor motors.
	AHU Fan /Pump Motors
	Machinery using multiple small motors.
	MAIN powers supply distribution panel board.
	DG Set application
	UPS
	Submersible Pumps
	Hoist & Crane

D1 HLS1 D1 HLS1

Advanced Motor Protection

The Minilec D1 HL S1 Phase Failure Relay safeguards motors and equipment against critical power issues like phase failure, sequence anomalies, and phase unbalance. Its rapid response capability and accurate detection enhance operational safety and reliability, mitigating the risk of mechanical breakdowns.

Effortless Installation & Maintenance

Featuring a compact enclosure made from flame-retardant ABS plastic and DIN rail mountability, the relay is designed for streamlined installation in control panels. Screw terminal connections facilitate straightforward wiring, while LED indicators simplify status monitoring and fault diagnosis.

Built for Indian Conditions

This model operates efficiently across demanding thermal ranges and humidity levels typical in India. It tolerates ambient and working temperatures from -10C to +55C and stores safely between -20C and +70C. Its mechanical life exceeds 10 million operations, ensuring sustained performance in harsh environments.

FAQs of Minilec Phase Failure Relays D1 HL S1:

Q: How does the Minilec D1 HL S1 relay protect motors and equipment?

A: The relay detects phase failure, incorrect phase sequence, and phase unbalance in three-phase systems. Upon sensing irregularities, it quickly interrupts the electrical circuit, protecting connected motors and equipment from potential damage or downtime.

Q: What is the installation process for this phase failure relay?

A: Installation is straightforward due to its DIN rail mountable design and screw terminal connectors. Simply secure the relay to the DIN rail in your control panel, connect supply terminals L1, L2, and L3, and wire the output terminals as per your system requirements.

Q: Where can the D1 HL S1 model be used?

A: It is suitable for industrial and commercial environments where three-phase motors or equipment require protection against abnormal power conditions. Common applications include pumps, compressors, HVAC systems, and machinery panels.

Q: What are the benefits of the LED status indication?

A: The integrated LED indication offers immediate visual feedback regarding the relays status and detected faults. This enables quick monitoring and diagnostics, significantly reducing maintenance times and ensuring prompt corrective action.

Q: What is the operating voltage and contact rating of this relay?

A: The relay is designed for 415V AC, 3-phase systems and features a contact load capacity of 5A at 250V AC (resistive). Its single change-over (SPDT) contact form uses durable silver alloy contacts for reliable switching.

Q: Does this relay support operation in high humidity environments?

A: Yes, the device is built to function in environments with relative humidity levels up to 95% non-condensing, making it suitable for use across diverse climatic conditions in India.

Get Latest Price