K248 KG | Alldatasheet
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Technical content
K248_EN Rev 2.0 1 K248 HIGH POWER LATCHING RELAY
- 320A Latching Relay
- Electrical endurance: 6000 cycles
- 4kV dielectric strength between coil and contacts
- According to ANSI C12.1 (Carrying current: 12kA / 66.7ms; 7kA /100ms)
- Outline dimensions: (120.35 x 92.4 x 51.9)mm
- Contact resistance: ≤0.15mΩ
- RoHS compliant materials and process Contact Data Characteristics Rated Load * 320A @ 240V Insulation resistance 1,000MΩ (at 500 Vdc) Contact form 2A or 2B Dielectric strength: Contact material AgSnO2 Coil to contact 4kVac for 1 min. Contact resistance † 0.15mΩ (at 320A) ‡ Across open contacts 2kVac for 1min. Max. switching voltage 265 Vac Dielectric creepage 9.6 mm Max. carrying current 320 A Ambient temperature -40°C to +85°C Max. switching current 320 A Ambient humidity 5% - 85% RH Rated switching power 76,800 VA Vibration 1.5 mm (DA) 10 Hz to 55 Hz Set time ≤ 30 ms Shock resistance: Reset time ≤ 30 ms Functional § 98 m/s2 Electrical endurance ** 6,000 cycles Survival †† 980 m/s2 Mechanical endurance ‡‡ 100,000 cycles Coil termination PCB & QC Construction Dust Protected Load termination QC Unit weight 1200g * Load at which the relay can pass ANSI C12.1 † Data shown are initial values for each respective load contact pair ‡ Typical value for Initial Contact Resistance: Using a sample quantity of at least 20 units, take the average value from 5 continuous measurements from each sample § Unit may change state but is still functional ** Applies to both Form 2A and Form 2B products; Power Factor: 1.0; 240Vac / 320A @ 23°C; Duty Cycle: 1s ON/ 9s OFF †† Acceleration 980 m/s2 (Duration 6 ms) ‡‡ Duty Cycle: 1s ON/ 1s OFF @ 23°C
K248_EN Rev 2.0 2 Coil Data Single Coil (Latching) Dual Coil (Latching) Coil Consumption 18W 36W Pulse Duration 50ms 50ms Coil Resistance (Ω±10%) at 23°C Nominal Coil Voltage Min Set/Reset Voltage Single Coil (Latching) Dual Coil (Latching) 6Vdc 4.8Vdc 2Ω 2 x 1Ω 9Vdc 7.2Vdc 4.5Ω 2 x 2.25Ω 12Vdc 9.6Vdc 8Ω 2 x 4Ω 18Vdc 14.4Vdc 18Ω 2 x 9Ω 24Vdc 19.2Vdc 32Ω 2 x 16Ω 48Vdc 38.4Vdc 128Ω 2 x 64Ω
Ordering Information
Terminal Type: A: See drawing X: Custom Design §§ Coil Type: S: Single Coil D: Dual Coil Coil Voltage *: 6, 9, 12, 18, 24, 48 Vdc Coil Polarity: P: Positive N: Negative Coil terminal L: Left side termination Position: R: Right side termination Load terminal Nil: Without external connection parts Type: 1: Including external connection parts Contact Form: 2A: Form 2A – Normally Open (NO) 2B: Form 2B – Normally Closed (NC) Contact Material: T: AgSnO2 Custom Number: Cxxxx: Where xxxx represents a unique number for custom relay terminal designs §§ For custom designs, please contact KG Technologies. Integrated CT’s, Hall-effect sensors, flex-wire, copper extension and brass terminals available * Coil voltage should be indicated in three-digit format (6Vdc = 006)
K248_EN Rev 2.0 3 Dimensional Drawings (Unit: mm) TYPE A: K248A-D012P-L1-2AT (TOP VIEW) Coil Wiring Diagrams Single Coil Dual Coil Positive Polarity Negative Polarity Positive Polarity Negative Polarity
K248_EN Rev 2.0 4 Application Notes 1. It is possible that during transit or final assembly the relay could change state. Therefore, it is recommended that all relays be set to the desired state via a power supply. 2. In order to maintain an “Open” or “Closed” state of the relay, the coil voltage should reach the rated voltage. The pulse width should be 50ms minimum to ensure a proper change of state. DO NOT energize both T1 and T3 at the same time on a Dual Coil or energize the coil for longer than 1 minute (damage to the coil could occur). 3. Applying excessive heat to the relay terminals (soldering or welding) can cause damage to the internal structure of the relay and should be avoided. 4. Moving or bending the terminals can cause damage to the internal structure of the relay and should be avoided. 5. For definitions of terms used in this data sheet, see glossary at www.kgtechnologies.net. Disclaimer: This datasheet is for reference only. All specifications are subject to change without prior notice. KG Technologies, Inc. cannot predict every possible application for our relays. While we do our best to make our relays as versatile as possible, we highly recommend contacting our engineering team if you have any questions. KG Technologies, Inc. is not responsible for malfunctioning relays when operated outside the specified parameters given in this datasheet.