Bosch KM3300 Modules: KM 3300-T 054915-103 KM3300

Technical Dossier

Product Details And Specifications

Bosch KM3300 Series: Comprehensive Module Range and Technical Overview

The Bosch KM3300 series represents a mature line of capacitor and power conditioning modules deployed across global heavy industry sectors, including petrochemical refineries, nuclear power auxiliary systems, and continuous-process chemical plants. These modules serve as critical energy storage and bus stabilization components within Bosch Rexroth drive and control architectures. Their robust DC-link capacitor design enables sustained operation under high-cycle industrial loads, making them a standard reference in long-term plant maintenance catalogs across Europe, Asia, and the Middle East.

The Evolution of KM3300 Architecture

The KM3300 series was introduced as part of Bosch's modular drive system infrastructure, designed to interface with servo amplifier and frequency converter platforms of the same generation. Early variants used discrete capacitor banks with analog charge monitoring circuits. Subsequent revisions integrated improved balancing resistors and enhanced thermal derating profiles to address field failures observed in high-ambient-temperature installations.

As Bosch transitioned its drive portfolio toward the Rexroth IndraDrive and Indramat TDM/KDS families, the KM3300 series entered a compatibility bridge phase — remaining mechanically and electrically interchangeable with legacy bus systems while newer platforms introduced digital bus monitoring. Units produced under the 054915-xxx part number range reflect the later production revision with updated capacitor cell specifications and revised torque ratings on terminal connections. The series is now in the mature/end-of-life phase; no new production runs are scheduled, and procurement is exclusively through authorized spare parts distributors and certified refurbishers.

KM3300 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified models within the Bosch KM3300 capacitor module family, organized by functional sub-type:

Capacitor / DC-Link Modules

• KM 3300-T 054915-103: DC-link capacitor module, T-variant, 054915 revision 103, standard bus rail mount
• KM 3300-T 054915-101: DC-link capacitor module, T-variant, revision 101, earlier production batch
• KM 3300-T 054915-102: DC-link capacitor module, T-variant, revision 102, intermediate production revision
• KM 3300-T 054915-104: DC-link capacitor module, T-variant, revision 104, latest known production revision
• KM 3300 054915-100: Base capacitor module, non-T variant, original release configuration
• KM 3300-D 054915-103: D-variant capacitor module, dual-section internal layout
• KM 3300-D 054915-101: D-variant, revision 101, earlier dual-section configuration

Power Supply / Bus Supply Modules (KM Series Adjacent)

• KM 3200-T 054914-103: Regenerative power supply module, T-variant, paired with KM3300 in multi-axis configurations
• KM 3200-D 054914-101: Regenerative power supply, D-variant, dual-channel output
• KM 3100-T 054913-103: Non-regenerative power supply module, T-variant, standard single-axis bus supply
• KM 3100-T 054913-101: Non-regenerative power supply, revision 101

Servo Amplifier Modules (KM3300-Compatible Drive Side)

• KM 3300-T 054915-105: Extended-capacity capacitor module variant for high-inertia load applications
• KM 3300-T 054915-106: High-temperature rated variant for foundry and furnace environments
• KM 3300-T 054915-107: Conformal-coated variant for humid or coastal industrial environments
• KM 3300-T 054915-108: Reduced-footprint variant for compact panel installations
• KM 3300-T 054915-109: Standard replacement variant, cross-referenced as direct substitute for 054915-103 in Bosch service bulletins

Sourcing Hard-to-Find & Obsolete KM3300 Parts

The KM3300 series has been formally discontinued by Bosch Rexroth. OEM new-old-stock (NOS) inventory is depleted at most authorized distributors. DriveKNMS maintains a dedicated obsolete parts inventory for this series, sourced through controlled decommissioning of industrial installations and verified refurbishment programs.

All KM3300 units in DriveKNMS inventory are cataloged by part number, revision code, and physical condition grade. Customers requiring long-term maintenance contracts for plants with installed KM3300 infrastructure can request a standing purchase agreement to reserve stock against future demand. DriveKNMS also provides cross-reference matching to identify compatible replacement modules from current Bosch Rexroth or third-party equivalent product lines where direct substitution is technically validated.

Quality Control for the KM3300 Range

KM3300 capacitor modules undergo a structured inspection and functional test protocol prior to dispatch. Each unit is subjected to DC-link capacitance measurement against OEM specification tolerances, insulation resistance testing at rated voltage, ESR (equivalent series resistance) verification, and visual inspection of bus bar terminals, capacitor cell housings, and PCB mounting integrity.

Units with capacitance degradation exceeding 10% of nominal value or ESR values outside the OEM-specified range are rejected and not offered for resale. Refurbished units that pass all electrical tests are issued a DriveKNMS test certificate with recorded measurement data. Backplane connector pins and locking mechanisms are inspected for deformation and contact resistance. All tested units are shipped in anti-static packaging with desiccant inserts appropriate for long-term storage if required by the customer.