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Minilec Current Monitoring Relays S2 CMR2

Minilec Current Monitoring Relays S2 CMR2 Specification

Contact Form
1 Changeover (SPDT)

Contact Material
Silver Alloy

Coil Power
<3VA

Contact Resistance
<50 m

Ambient Temperature
-10C to +55C

Working Temperature
-10C to +55C

Dielectiric Strength
2kV AC, 1 min

Power Consumption
<3VA

Coil Voltage
230V AC

Protect Feature
Overcurrent/Under-current Protection

Mechanical Life
>10^6 Operations

Product Type
Current Monitoring Relay

Insulation Resistance
>=100 M at 500V DC

Theory
Electromagnetic Relay

Usage
Current Monitoring in Control Panels

Contact Load
5A @ 250V AC (Resistive)

Operate Time
<100ms

Terminal Type
Screw Terminals

Rated Voltage
230V AC, 50Hz

Supply Terminal
Terminal Blocks

Size
22.5 mm Wide Enclosure

Color
White & Blue

Dimension (L*W*H)
Approx. 90mm x 22.5mm x 75mm

Weight
Approx 110g

USB Ports
2

Smart TV Features
Built-in WiFi, Screen Mirroring

Operating System
Android

Viewing Angle
178

Sleep Timer
Yes

Refresh Rate
60 Hz

Remote Battery Type
AAA

About Minilec Current Monitoring Relays S2 CMR2

Minilec Current Monitoring Relays

OVERVIEW:-

Single phase under & over current,

Microcontroller based design, SMD technology,

Auto/Manual reset, Input 1A or 5 A through CT,

Adjustable under / over current trip settings,

Adjustable trip delay & ON delay,

2 CO output relay (or selectable 1CO for UC, 1CO for OC)

Failsafe-non-failsafe mode selectable

TECHNICAL SPECIFICATION :-

Supply Voltage

System

100-120 / 220-240 V AC ±20%,

Auxillary

24 V DC ±10%


Ext. Input		:	1 Amp or 5 Amp (Secondary) CT

Output Contacts		:	1 CO + 1 CO

Trip Setting
	EF Trip Setting	:	-
	Under Current	:	10% - 100% (Variable)
	Over Current	:	50% - 140% (Variable)

Power On Delay		:	1-10 Sec. (Adjustable) ± 1 Sec.

Trip Time Delay	:	1-10 Sec. (Adjustable) ± 1 Sec.

Resetting	:	Auto / Manual

Weight		:	140 gms.

Dimensions (mm)
	Overall (L x W x D)	:	95 x 35 x 60
	Mounting (L x W)	:	35 mm rail Mounting

Note:

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

APPLICATION:-

Suitable for following application:
	Generator panels / AMF Panels.
	Load Monitoring of Conveyor.
	Fan Belt Failure Monitoring.
	Dry Run of Pumps.
	No Load Monitoring of Motors.
	Ice Cream making Machines, Softy Machines.
	Capacitor bank.

Advanced Current Monitoring

Minilec S2 CMR2 delivers accurate current detection for your control panels, thanks to its true RMS sensing technology and an adjustable input range. The overcurrent and under-current protection functions safeguard sensitive equipment, reducing downtime and enhancing operational reliability.

User-Friendly Design

Installation is streamlined with DIN rail mounting and screw terminals for secure wiring. LED indication offers immediate relay status visibility, while the compact enclosure allows space-efficient panel integration. Terminal blocks enable easy connections for supply and output.

Durable, Safe, and Efficient

Engineered with flame-retardant plastic housing and silver alloy contacts, the relay offers superior durability. It operates efficiently at ambient temperatures between -10C and +55C and withstands rigorous mechanical stress, ensuring longevity and consistent performance.

FAQs of Minilec Current Monitoring Relays S2 CMR2:

Q: How does the Minilec S2 CMR2 ensure accurate current monitoring in control panels?

A: The relay uses true RMS sensing to accurately measure input current between 0.1A and 2A, enabling precise detection of both overcurrent and under-current conditions. This ensures reliable protection for sensitive equipment within control panels.

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

A: The integrated LED indication provides clear visual feedback about the relays operational status. This helps users monitor system health and react quickly to abnormal current conditions without needing specialized diagnostic tools.

Q: Where can the S2 CMR2 be installed, and what is the recommended mounting method?

A: Designed for use in industrial control panels, the S2 CMR2 is suitable for DIN rail mounting, facilitating secure and straightforward installation in electrical enclosures or cabinets.

Q: What protections does the relay offer for electrical systems?

A: The S2 CMR2 provides both overcurrent and under-current protection, helping prevent equipment damage and ensuring process continuity in powered systems. High insulation resistance and dielectric strength further enhance reliability and safety.

Q: When should I use the S2 CMR2 relay in my application?

A: Use this relay whenever precise current monitoring and fast response are needed in control panels, particularly where protection against current fluctuations is essential for system safety and uptime.

Q: How do I connect the S2 CMR2 relay to my panel?

A: Connections are made via screw terminals and terminal blocks. The supply terminal accepts 230V AC, 50Hz input, while potential-free relay contacts facilitate integration with other devices or alarm circuits.

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