# Chroma 6312A 2-Slot Mainframe for 6310A Series DC Electronic Load (Pre-Owned) # Chroma 6312A 2-Slot Mainframe for 6310A Series DC Electronic Load (Pre-Owned) ## Key Features At A Glance - Modular load family covering 20 W to 1,200 W per module, with current ratings from 0.5 mA to 240 A and voltage ratings from 0.5 mV to 600 V - Four operating modes: constant current (CC), constant voltage (CV), constant resistance (CR), and constant power (CP) - Dynamic loading with cycling speeds up to 20 kHz and slew rates from 0.32 mA/µs to 10 A/µs - Up to eight channels in one mainframe (6314A four-slot or 6312A two-slot) for testing multi-output power supplies - Parallel load module operation up to 1,200 W for high-current and high-power applications - 16-bit precision dual-range voltage and current measurement with remote sensing - Programmable OCP test with user-defined start current, end current, step current, and dwell time - USB, GPIB, and RS-232C interfaces standard or optional for ATE and automated production-line integration The Chroma 6310A Series Programmable DC Electronic Load is a modular load platform designed for the test and evaluation of multi-output AC/DC power supplies, DC/DC converters, chargers, and power electronic components. The system consists of a 6312A two-slot or 6314A four-slot mainframe populated with user-selectable load modules. Users interface with the system through an ergonomic front-panel keypad on the mainframe controller or through computer interfaces including RS-232C, USB, and GPIB. The datasheet positions the 6310A Series for applications in research and development, production, and incoming inspection. Specific use cases listed include testing multi-output switching power supplies, evaluating DC/DC converters, characterizing chargers, simulating battery discharge profiles, testing super capacitor discharge, and performing LED driver evaluation when configured with the LED-simulator modules. The system also supports go/no-go production testing through its GO/NG output port and digital I/O control lines. ## Brand Heritage Chroma ATE Inc. is headquartered in Taoyuan, Taiwan, with regional operations in the United States (Chroma Systems Solutions, Inc.), Europe (Chroma ATE Europe B.V.), Japan (Chroma Japan Corp.), China, and Southeast Asia. The 6310A Series is a direct evolution of the earlier Chroma 6310 family and maintains module-level compatibility with the 6312 and 6314 mainframes as well as remote-control command compatibility, so existing test programs do not need to be rewritten when migrating between the two generations. ## Compare Other Models in This Series The 6310A Series is built around two mainframes — the 6312A two-slot and the 6314A four-slot — that accept any combination of twelve load modules. The mainframes provide the user interface, communication interfaces (RS-232C standard; GPIB and USB optional), and shared infrastructure for synchronizing channels. Up to eight channels are available in a single mainframe when dual-channel modules such as the 63102A or 63107A are used. Module selection is driven by three primary parameters: voltage range, current range, and power rating. The datasheet groups the modules into general-purpose CC/CV/CR/CP modules (63101A, 63102A, 63103A, 63105A, 63106A, 63107A, 63108A, 63112A, 63123A) and a separate LED Load Simulator group (63110A, 63113A, 63115A) that adds LED V-I curve emulation on top of the standard load functions. Each pre-owned 6310A mainframe and each pre-owned load module listed below is its own product page with condition-matched pricing. Mainframes and modules are sold individually so the user can build the channel mix the application requires, or replace a single module in an existing 6312A/6314A system without changing the mainframe. Within the general-purpose module group, the primary differences are voltage ceiling and current/power capability. The 63101A, 63102A, 63103A, 63107A, 63112A, and 63123A modules operate up to 80–120 V, with current ratings ranging from 20 A (63102A per channel) up to 240 A (63112A), and power from 100 W to 1,200 W. The higher-voltage modules — 63105A, 63106A (note: 63106A is rated 80 V per spec table), and 63108A — extend operation to 500 V for testing higher-voltage supplies and converters. The LED Load Simulator modules differ by voltage ceiling and current capability: the 63110A operates up to 500 V at 0.6–2 A per channel (dual 100 W channels), the 63113A operates up to 300 V at 5–20 A (300 W), and the 63115A extends the voltage range to 600 V at 5–20 A (300 W). All three add LED-specific parameter set (operating voltage, Vf, Rd, Rd coefficient) on top of the standard CC, CV, and CR modes. Refer to the comparison table that follows for the per-model voltage, current, power, and mode specifications drawn from the datasheet. Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below. ## Product Core & Specifications Parameter Specification Number of slots 2 Operating Temperature 0~40°C Input Rating 1Ø 100/200Vac ± 10% VLN, 47~63Hz; 1Ø 115/230Vac ± 10% VLN, 47~63Hz Dimensions (HxWxD) 194 x 275 x 550 mm / 7.6 x 10.8 x 21.7 inch Weight 15 kg / 33.1 lbs **Important:** Per the datasheet: if the operating voltage exceeds 1.1 times the rated voltage of a module, permanent damage to the device can result. For modules with a 1.02× warning threshold, an over-voltage warning is issued before this damage limit is reached.**Important:** Load modules require a 6312A (2-slot) or 6314A (4-slot) mainframe for operation; power is supplied from the mainframe. Modules cannot be operated standalone.**Important:** For the standard 6310A load modules, if the operating voltage exceeds 1.02 times the rated voltage, a warning will occur, and if it exceeds 1.1 times the rated voltage, permanent damage to the device may occur.**Important:** For the 63110A LED Load Simulator module, if the operating voltage exceeds 1.1 times the rated voltage, permanent damage to the device may occur.**Important:** For the 63123A module, dynamic-mode minimum rise time of 25 us (typical) requires a loading current of at least 0.35 A.Recommended pairing: configure the 6310A with the Chroma A631005 Softpanel for the 6310A/6330A series when the application requires PC-based control of LED, dynamic, battery, or charger test routines. The A631000 GPIB interface or A631003 USB interface is also required for the 6312A/6314A mainframe to enable remote control beyond the standard RS-232C port. ## About this used unit - Warranty included - Functional verification included - Standard Calibration Upgrade Options: No Calibration Required, NIST Traceable, Z540.1 or ISO 17025 with Data, Z540.3 Guardbanding with Data. - Note that unnecessary accessories may not be included (contact Test Architect to confirm). **Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.** ## Details - **Price:** 0.0 USD - 225.0 USD - **Vendor:** Chroma - **Type:** Dc Electronic Load - **Tags:** 6312, 6312A, Chroma, Chroma ATE, consignment-active, DC Electronic Load, Manufacturers, Model 6312, Power Supplies & Loads, Pre-Owned, product_manual_group_1, product_manual_group_3, Product_used ## Variants | Variant | Price | Available | |---------|-------|-----------| | None | 0.00 USD | In stock | | NIST Traceable | 135.00 USD | In stock | | NIST Traceable with Full Data | 187.50 USD | In stock | | ISO IEC 17025 Accredited | 225.00 USD | In stock | ## Images - Chroma 6312A 2-Slot Mainframe for 6310A Series DC Electronic Load (Pre-Owned) --- > Source: [ValueTronics](https://valuetronics.com/products/6312a-chroma-dc-electronic-load-used) > Updated: 2026-05-30