Home / Product / Relay for DIN rail meter / Three-phase DIN rail mounted relay / HJE31B-100A Split-Type Latching Relay for 7P DIN Rail MeterProduct Definition: The HJE31B-100A is a split-type 7P DIN rail relay designed specifically for three-phase power systems. It features current monitoring, relay protection, and energy metering functions, and is widely used in high-load power environments. Its split-type design facilitates flexible installation and maintenance, making it an indispensable protection and metering device in power systems.

Core Advantages:
High Current Capacity: Supports high-current monitoring and protection up to 100A, suitable for high-current applications in industrial and commercial settings.
Accurate Metering: High-precision current detection and energy metering ensure the reliability and accuracy of power data.
Split Design, Flexible Installation: The split-type design enhances installation convenience and adapts to various installation needs. The 7P wiring method offers greater flexibility, meeting the power management requirements of different systems.
High Stability: Resistant to high temperatures, high humidity, and strong electromagnetic interference, ensuring long-term stable operation and reducing maintenance frequency and costs.
Application Scenarios:
Industrial Power Systems: Widely used for power monitoring and protection of high-current industrial equipment such as heavy machinery and production lines.
Commercial Buildings: Suitable for three-phase power metering and safety management in buildings, shopping malls, and other similar locations. Energy monitoring: Provides power companies with accurate current monitoring and fault alarms to ensure the safe and efficient operation of the power system.
| Contact Data | |
| Rated load(FLA) | 100A/250VAC |
| Contact form | 1A & 1B |
| Contact material | AgSnO2 |
| Initial contact resistance | 2mΩ(0.1A@6vdc) |
| Max. switching current | 100A |
| Max .switching voltage | 250VAC |
| Ma x.switching power | 20000VA |
| Electrical endurance | 6x103 ops |
| Mechanical endurance | 1x106ops |
| Characteristics | ||
| Insulation resistance | 1000MΩ(at 500VDC) | |
| Dielectric strength | Coil to contact | 4000VAC 1 min |
| Across open contact | 2000VAC 1 min | |
| Operate time | Max.20ms | |
| Release time | Max.20ms | |
| Shock resistance functional | 100m/s2 (10g) | |
| Shock resistance destructive | 1000m/s2 (100g) | |
| Ambient temperature | -40~85℃ | |
| Humidity | 98%RH, +40℃ | |
| Vibration resistance | 10-55Hz, 1.5mm(DA) | |
| Termination | PCB | |
| Unit weight | 45g | |
| Construction | Dust protected | |
| Coil Power | ||
| Coil type | Pulse duration | Power consumption |
| Single | Min.50ms | 1W |
| Dual | Min.50ms | 2W |
| Coil Data | |||||
| Nominal coil voltage | 6Vdc | 9Vdc | 12Vdc | 24Vdc | |
| Operating Voltage VDC | ≤4.2 | ≤6.3 | ≤8.4 | ≤16.8 | |
| Coil Resistance (Ω±10%)@23℃ | Single coil resistance | 36Ω | 80Ω | 144Ω | 576Ω |
| Dual coil resistance | 2×18Ω | 2×40Ω | 2×72Ω | 2×288Ω | |

Application Notes
1、All relays are shipped in the “closed” position. It is possible that during transit or final assembly,y the relay could change its state to the “open” position. Therefore, it is recommended that all relays be set to the desired state of the relay 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 5 times the operating time to ensure a proper change of state. Do not energize both T1, T,2 and T3 at the same time on a dual coil or energize the coil for longer than 1 minute (damage to the coil could incur).
3、Relays have polarity,if the user’s need different from information,shoud be contact us.
4、The relay to the factory inspection and use should be handled to prevent damage to the factory for damaging the goods, shoud be strict distinction between the normal product and must not be used.
Established in May 2021
Annual exports account for about 30%
The company occupies an area of 8,000 square meters.
Huajin Technology Jiaxing Co., Ltd. was established in May 2021 and is located at 707 Yanyu Road, Yucheng Town, Haiyan County, Jiaxing City, Zhejiang Province. It is a high-tech enterprise specializing in the research and development, production, and sales of relays. The registered capital of the company is 10 million yuan, covering an area of 8000 square meters, with more than 120 employees. The annual production capacity of magnetic latching relays is over 10 million, of which exports account for about 30%. The company has obtained ISO9001-2015 quality management system certification, and its relays have passed CCC certification, State Grid certification, TUV certification, etc. It also holds multiple technical patents. Our main products include motor relays, single-phase, two-phase, and three-phase magnetic latching relays, which have a wide variety of types and can meet various customized solutions for customers.