IS420UCSBH3A GE Mark VIe distributed controller

Technical Parameters of IS420UCSBH3A GE
1. Basic Information
Brand: GE (General Electric)
Model: IS420UCSBH3A
Product Category: Universal Controller Safety Module (for GE Mark VIe distributed control system)
2. Physical Specifications
2.1 Dimensions
The overall dimensions of the IS420UCSBH3A GE module are 160 mm × 100 mm × 40 mm (Length × Width × Height). The compact and standardized dimension design ensures seamless integration into GE Mark VIe system cabinets, optimizing the space utilization of the control cabinet and facilitating the overall layout of the control system.

2.2 Weight
The net weight of the IS420UCSBH3A GE module is approximately 420 grams. The optimized weight design reduces the load pressure on the system’s mounting bracket, ensuring the stability of the long-term installation structure and simplifying the on-site installation and maintenance operations for technicians.
3. Environmental Parameters
3.1 Operating Temperature Range
The IS420UCSBH3A GE module supports a wide operating temperature range of -20°C to +65°C. This excellent temperature adaptability enables it to operate stably in complex industrial environments with temperature variations, such as thermal power plants, petrochemical processing workshops, and other harsh on-site conditions.
3.2 Storage Temperature Range
For storage, the module can withstand temperatures ranging from -40°C to +85°C. This broad storage temperature range guarantees the module’s performance integrity during long-distance transportation and long-term storage, unaffected by regional climate differences and storage environment limitations.
3.3 Humidity Resistance
The module is designed to operate in environments with a relative humidity of 10% to 90% (non-condensing). It is equipped with advanced moisture-proof protection measures, which effectively prevent internal circuit damage caused by humid environments and ensure reliable operation in coastal industrial areas, water treatment plants, and other high-humidity scenarios.

4. Electrical Parameters
4.1 Power Input
The IS420UCSBH3A GE module adopts a redundant power input design to ensure high reliability. The input voltage range is 24 VDC ± 15%, with a typical input current of 1.2 A. The redundant power supply design ensures that the module can continue to operate stably even if one power path fails, greatly enhancing the fault tolerance and operational continuity of the entire safety control system.
4.2 Input Signals
The module is equipped with 32 channels of digital input. It supports dry contact input signals, with a rated input voltage of 24 VDC. The input response time is ≤ 1 ms, ensuring rapid and accurate collection of on-site switch status signals. Each input channel is equipped with independent optical isolation protection, which effectively suppresses electromagnetic interference and improves the stability and anti-interference ability of data acquisition.
4.3 Output Signals
There are 16 channels of relay output on the module. The maximum switching voltage of each output channel is 250 VAC / 30 VDC, and the maximum switching current is 2 A. The relay output has a normally open contact configuration, which can be flexibly matched with various on-site actuators (such as solenoid valves, contactors, etc.) according to control requirements. The output channels have overload and short-circuit protection functions to ensure the safe operation of the module and connected equipment.
5. Safety and Compliance Parameters
The IS420UCSBH3A GE module complies with international safety standards such as IEC 61508 and is certified for Safety Integrity Level (SIL) 3. It has passed strict electromagnetic compatibility (EMC) tests, including electrostatic discharge (ESD) protection (±8 kV contact, ±15 kV air), surge protection (±2 kV differential mode, ±4 kV common mode), and radiated immunity. The module’s insulation resistance is ≥ 200 MΩ (500 VDC), ensuring excellent electrical safety performance and effectively preventing short circuits and electrical hazards.
6. Installation and Connection Parameters
The module adopts a rail-mounted installation method, compatible with standard 35 mm DIN rails. The connection interface uses screw-type terminals, which provide reliable wiring contact and facilitate on-site wiring and maintenance. The maximum wiring distance for input and output signals is 500 meters when using shielded twisted-pair cables, which can fully meet the wiring needs of general industrial sites and ensure stable signal transmission.