Ideal for use as a circuit breaker trip command relay in protective relay equipment.
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PCB Mounting Relays
Single-pole relay RI-□15T□C (Medium-Capacity Type) RI-D25T1C (Large-Capacity Type)
▼Features
◼ These relays are reliable in a wide range of applications, from micro-current circuits at signal level to power circuits for switching inductive loads.
◼ The large closed circuit capacity and fast operating time make them ideal for tripping circuit breakers.
◼ Plug-in type Bestact relays allow easy rewiring in the control cabinet.
◼ The low power consumption of the coil reduces the temperature rise in the switchboard.
◼ Flow soldering is supported.
◼ These relays are reliable in a wide range of applications, from micro-current circuits at signal level to power circuits for switching inductive loads.
◼ The large closed circuit capacity and fast operating time make them ideal for tripping circuit breakers.
◼ Plug-in type Bestact relays allow easy rewiring in the control cabinet.
◼ The low power consumption of the coil reduces the temperature rise in the switchboard.
◼ Flow soldering is supported.
Ratings and Specifications
Type | RI-B15T1C | RI-B15T2C | RI-C15T1C | RI-D25T1C | |
Contact Arrangement | 1NO | 1NC | 1NO | ||
Built-in Contact Type (Bestact) | R15 | R25 | |||
Contact Performance | Making Capacity | 115VDC 20A (L/R≧5ms) Current-Carrying time: 0.5s | ー | ||
Breaking Capacity | 115VDC 0.5A (L/R=100ms) | 115VDC 0.3A（L/R=40ms） | |||
Rated Operational Current （Inductive Load） | 240VAC 1A（50/60Hz） 115VDC 0.5A, 240VDC 0.2A（L/R=100ms） | 240VAC 0.5A（50/60Hz） 115VDC 0.3A（L/R=40ms） | |||
Minimum Operational Power Ratings | 24VDC 1mA Failure Rate λ₆₀＝4.6×10⁻⁹（/time）or less | ||||
Initial Contact Resistance | 500mΩ or less（6VDC 1A） | ||||
Operating Time | 5ms or less (+20℃) | 3ms (-20℃ to +60℃) | 5ms or less (+20℃) | 5ms or less (+20℃) | |
Releasing Time | 3ms or less | 7ms or less | 3ms or less | ||
Bounce Time | 3ms or less | ||||
Rated Insulation Voltage | 250VAC（50/60Hz） | ||||
Insulation Resistance | 100MΩ or greater (with 500VDC Megger) | ||||
Withstand Voltage | Across open contacts: 1000VAC, 1 min (50/60Hz) Between coil and contact : 2200VAC, 1 min (50/60Hz) | Across open contacts: 500VAC, 1 min (50/60Hz) Between coil and contact : 2200VAC, 1 min (50/60Hz) | |||
Vibration Resistance | Malfunction: 98m/s² {10G} (20 to 1000Hz) | ||||
Shock Resistance | Malfunction : 147m/s² {15G}, Destruction : 980m/s² {100G} | ||||
Operating Temperature | -20℃ to +60℃ | -20℃ to +60℃ | -40℃ to +60℃ | -40℃ to +60℃ | |
Storage Temperature | -40℃ to +80℃ | -60℃ to +80℃ | |||
Approx. Weight | 35g | 40g | 15g | ||
Note:
1. The contact performance specifications refer to the built-in contacts.
2. The rated operational current indicates the current value to be used under the rated operational voltage and specified conditions (make and break current, switching frequency, and electrical endurance).
For 240VAC: The setting is based on 10× make (cosφ = 0.6–0.7) and 1× break (cosφ = 0.3–0.4). A rated operational current of 1A means 10A for making and 1A for breaking. For 115VDC: The setting is based on 1× make and 1× break, specified for inductive loads (L/R = 40ms and 100ms).
3. Time characteristics are values measured at an ambient temperature of +20℃ with the coil energized at its rated voltage.
4. Operating Time for 1NO and Releasing Time for 1NC do not include Bounce Time.
5. Temperature characteristics are values under conditions without freezing or condensation.
6. All values, unless specifically stated, are measured at an ambient temperature of +20℃.
1. The contact performance specifications refer to the built-in contacts.
2. The rated operational current indicates the current value to be used under the rated operational voltage and specified conditions (make and break current, switching frequency, and electrical endurance).
For 240VAC: The setting is based on 10× make (cosφ = 0.6–0.7) and 1× break (cosφ = 0.3–0.4). A rated operational current of 1A means 10A for making and 1A for breaking. For 115VDC: The setting is based on 1× make and 1× break, specified for inductive loads (L/R = 40ms and 100ms).
3. Time characteristics are values measured at an ambient temperature of +20℃ with the coil energized at its rated voltage.
4. Operating Time for 1NO and Releasing Time for 1NC do not include Bounce Time.
5. Temperature characteristics are values under conditions without freezing or condensation.
6. All values, unless specifically stated, are measured at an ambient temperature of +20℃.
Coil Specifications
Type | Contact Arrangement | Rated Voltage ( E ) | Coil Resistance | Rated Power Consumption | Operation Characteristics | |||
Operating Voltage 75%E or less (+20℃ Cold Start) | Releasing Voltage 8.5%E or greater (+20℃ Cold Start) | Continuous Allowable Voltage | ||||||
Medium- Capacity | RI-D25T1C/D5 | 1NO | DC5V | 70Ω | Approx. 0.5W | DC3.5V or less *4 | DC0.425V or greater | DC8.5V |
RI-D25T1C/D12 | DC12V | 400Ω | DC9.0V or less | DC1.02V or greater | DC20.4V | |||
RI-D25T1C/D24 | DC24V | 1500Ω | DC18.0V or less | DC2.04V or greater | DC40.8V | |||
RI-D25T1C/D48 | DC48V | 5500Ω | DC36.0V or less | DC4.08V or greater | DC81.6V | |||
Large- Capacity | RI-B15T1C/D12 | DC12V | 250Ω | Approx. 0.6W | DC9.0V or less | DC1.02V or greater | DC19.2V | |
RI-B15T1C/D24 | DC24V | 1020Ω | DC18.0V or less | DC2.04V or greater | DC38.4V | |||
RI-B15T1C/D48 | DC48V | 4030Ω | DC36.0V or less | DC4.08V or greater | DC76.8V | |||
RI-B15T2C/D12 | DC12V | 130Ω | Approx. 1.1W | DC9.0V or less | DC1.02V or greater | DC14.04V | ||
RI-B15T2C/D24 | DC24V | 465Ω | DC18.0V or less | DC2.04V or greater | DC28.08V | |||
RI-C15T1C/D12 | 1NC | DC12V | 290Ω | Approx. 0.6W | DC9.0V or less | DC1.02V or greater | DC18.0V | |
RI-C15T1C/D24 | DC24V | 1080Ω | DC18.0V or less | DC2.04V or greater | DC36.0V | |||
RI-C15T1C/D48 | DC48V | 3700Ω | DC36.0V or less | DC4.08V or greater | DC72.0V | |||
Note: 1. Coil specifications tabulated above are the ones at ambient temperature of +20℃ unless especially described.
2. Coil resistance can vary ±10％.
3. Continuous allowable voltage is the value that can be applied infrequently within 3 hours.
＊4. This is the specified value to enable hot start at the operating ambient temperature of 60℃ (no contact energized) with the voltage applied to the coil as 4.7±0.25V.
Therefore, the minimum operating voltage only for RI-D25T1C/D5 is 70%E or less.
2. Coil resistance can vary ±10％.
3. Continuous allowable voltage is the value that can be applied infrequently within 3 hours.
＊4. This is the specified value to enable hot start at the operating ambient temperature of 60℃ (no contact energized) with the voltage applied to the coil as 4.7±0.25V.
Therefore, the minimum operating voltage only for RI-D25T1C/D5 is 70%E or less.
Dimensions (㎜)
