DEMA Relay Inc. has been manufacturing and delivering secondary protection systems and supplementary products since 1977.

Dema has become one of the pioneer companies in the fields of protection knowledge base, product quality and customer support.

  • ABOUT US
  • ABOUT US
  • ABOUT US

Dema Relay Inc. is running all of the product realization processes within its body, including the R&D, prototyping, molding and mass production phases.

Dema Relay Inc. produce its products both in European standards, and IEC (International Electrotechnical Commission) norms; has relevant quality and test certifications by various institutions and organizations.

Dema Relay Inc. , has been providing after-sales support, technical service, relay trainings and relay software developed by Turkish Engineers to its customers, in addition to carrying out production with today's technology based on customer satisfaction since it started its activities. Customers are also provided with technical support in areas such as field applications, product commissioning and breaker, DC supply, current transformer, control panel in the product systems, and the correct construction of the protection selectivity is ensured.

1977

R1AS10S: Single-Phase Secondary Current Relay

RY3: Auxiliary Relay

ID1: Cell Heater Resistors

R1AS10ST: Electromechanical Single Phase Definite Time Overcurrent Earth Relay

ZR101: Electromechanical Time Relay

1978

R3AS20: Electromechanical 3 Phase Definite Time Short Circuit  Relay

ZR102: Electromechanical Time Relay  

1979

RU10D: Single Phase Under Voltage Relay

KAC:  Capacitor Supplying Unit

KR12:  Horn auxiliary relay

1980

R3AS20E: The first DMT electromechanical overcurrent protection relay in the country, Electromechanical 3 Phase Overcurrent Short Circuit Relay with Thermal Characteristics

RY 600 : Auxiliary Relay

BR101: Flashing Relay

WR101: Impulse Relay

1981

RU10DT: Electromechanical Single Phase Definite Time Undervoltage Relay

GKR15: DC Voltage Monitoring Relay

1982

RU10A: Single Phase Overvoltage Relay

IT1 , IT2: Signal lamp box

KR30 : Horn Relay

1983

RU10AT: Electromechanical Single Phase Definite Time Overvoltage Relay

ZR20: Pick-up Delay Time Relay

ZR25: Drop-off Delay Time Relay

1984

RU22T: Electromechanical  Single Phase Definite Time Over and Under Voltage Relay

1985

R1TA112: Electromechanical Single Phase Inverse Time overcurrent relay (with DRK05 case)

The first draw out type electromechanical overcurrent protection relay in the country with IDMT delay.

1986

RU1DT : Under Voltage Relay

1987

RU33T: Three-phase definite time undervoltage relay

ITI-6 : Signal Lamp Box with 6 Windows

1988

R1ST03A: Single phase thermal overcurrent relay (without heat indicator) (with DRK05 case)

BR25: Flashing Relay

WR25: Impulse Relay

1990

R1SA01: The first draw out type electromechanical earth fault protection relay in the country with DMT delay,

Single phase definite time earth-fault relay (with DRK05 case)

R1ST04:The first draw out type electromechanical thermal overload protection relay in the country with thermal image display

Electromechanical Single Phase Earth Thermal overcurrent relay (with heat indicator) (with DRK05 case)

1991

R1SA01S: Electromechanical Single phase definite time earth-fault relay

1992

R1SA04S: Single phase thermal overcurrent relay

IR521: Double Flashing Type Signalling Relay Combination with 5 Signal Units

1993

R1ST04S: Electromechanical Single Phase Thermal (with Indicator) overcurrent relay

1995

R3ST05: Electromechanical 3 Phase Overcurrent Short-Circuit protection Relay with Thermal Characteristic

1996

RU33TA:  Electromechanical 3 Phase Definite Time Over Voltage Relay

RU33TD: Electromechanical 3 Phase Definite Time Under Voltage Relay

1997

MCR Series: The first draw out type electronic overcurrent protection relay series in the country with DMT and IDMT delay,

  • MCR 010- Single Phase Earth Overcurrent Short Circuit

  • MCR 100- Single Phase Overcurrent Short Circuit Relay

  • MCR 200: Electronic Microprocessor control Multifunction 2 Phase

  • MCR 210- 2 Phase – 1 Earth Overcurrent Short Circuit Relay

  • MCR 300 – 3 Phase Overcurrent Short Circuit Relay Electronic Microprocessor control Multifunction 3 Phase

  • MCR 310 - 3 Phase – 1 Earth Overcurrent Short Circuit Relay

MVR Series: The first draw out type electronic over/undervoltage protection relay series in the country with DMT and IDMT delay

  • MVR 100 :1 Unit  over/under voltage relay

  • MVR 200: 2 Units over/under voltage relay

  • MVR 300 : 3 Units over/under voltage relay

  • MVR 400 : 4 Units over/under voltage relay

1998

LTR 010: Lockout Relay

1999

IR61K: Signalling Relay Combination with 6 Signal Units

IR101: Signalling Relay Combination with 10 Signal Units

2000

IR1021: Double Flashing Type Signalling Relay Combination with 10 Signalling Units together with LED Indicators

2001

ITI-6: Signal Lamp Box with 6 Windows

2002

IR61K-A: Signalling Relay Combination with 6 Signal Units together with LED Indicators

IR101K-A:Signalling Relay Combination with 10 Signal Units together with LED Indicators

K101: Horn

2004

K101-A2: Horn with LED Indication

2006

CPM 310 G: Digital Multifunction Draw-Out Type Current Protection Relay

2008

LTR-400 : Lock-out Relay

2010

IR101K-A2: Annunciator Relay (10 independent announcer inputs and outputs.)

IR61K-A2: Annunciator Relay (6 independent announcer inputs and outputs.)

2011

CPM 311: The first digital relay with separate control and main units

Digital Multifunction Modular Type Current Protection Relay

T4CH:  The first Digital Thermistor Relay

2013

DPM 400-D: Digital Multifunction Draw-Out Type Directional Current Voltage Frequency Protection Relay

2015

IT1-6U: Led Annunciator

2018

SL100: Trip Circuit Supervision Module

2021

CPM 310 DE: Digital Multifunction Draw-Out Type Current Protection Relay

2022

CPM 312 SE: Digital Multifunction Fixed Type Current Protection Relay