Vertiv (Liebert) Liebert NXC · APM · EXM / EXM2 Maintenance
side by side.

Liebert NXC · 30-200kVA mainstream modular

NXC 30kVA · 40kVA · 60kVA · 90kVA · 120kVA · 160kVA · 200kVA (hot-swap power modules)

Liebert APM · 30-150kW compact modular

APM 30kW · 60kW · 90kW · 120kW · 150kW (compact form factor, kW specification)

Liebert EXM · 50-250kVA enterprise modular (1st gen)

EXM 50kVA · 100kVA · 160kVA · 200kVA · 250kVA (1st generation, pre-EXM2)

Liebert EXM2 · 50-250kVA current gen

EXM2 50kVA · 100kVA · 160kVA · 200kVA · 250kVA (current 2nd generation, lithium-ion options)

Module service · the central maintenance leverage

Power modules · battery modules (VRLA + lithium-ion on EXM2) · intelligence modules · static switch · bypass modules

Components and Network Management

Fans · LCD displays · backplane · IntelliSlot Web Card · IntelliSlot Unity Card

Lifecycle status of NXC/APM/EXM lines

Liebert NXC, APM and EXM/EXM2 are the class with larger TPM leverage than GXT/ITA — through higher power classes and more module complexity. Vertiv Service Plans for NXC/APM/EXM are a significant cost block per UPS unit, depending on size and SLA tier — for DACH customers with 5+ modular Liebert UPS in mid-market or enterprise datacenters the Vertiv service contract quickly becomes a significant budget item. TPM reduces this 30-50 percent below, with transparent module pricing logic (fixed price per power module swap, battery module swap or intelligence module swap). For multi-class Liebert fleets (e.g. NXC for mainstream and APM for compact server rooms parallel) maintenance savings plus operations simplification add up further. <strong>EXM/EXM2 differentiation:</strong> EXM 1st Generation is mid-lifecycle, EXM2 (current 2nd generation with lithium-ion battery options) is current premium class — TPM works on both generations, with different battery service logics (VRLA refresh for EXM 1st Gen, lithium-ion service for EXM2 configurations).

We service Liebert NXC/APM/EXM with OEM components and deep refurbishing pools for all module classes. NXC (current generation from 2017) and APM (current generation from 2018) completely in active pool — same component logic as current modular mid-range classes from other UPS vendors. EXM 1st Generation (2014-2018) is mid-lifecycle, EXM2 (from 2018) is current generation — both in pool with respective power modules and battery modules. <strong>Hot-swap service logic:</strong> power modules with N+1 redundancy hot-swap-capable (UPS stays online via remaining modules), with N configuration via bypass circuit. Battery modules hot-swap-capable in all classes — battery frames removed individually, UPS runs via other battery frames or in bypass mode. Intelligence modules often N+1 redundant configuration also hot-swap. Our Liebert-certified engineers check current redundancy configuration before each swap. <strong>EXM2 lithium-ion service:</strong> EXM2 supports VRLA battery cabinets and lithium-ion battery cabinets — we service both battery classes with respective service procedures (lithium-ion cells have different lifecycle logic than VRLA).

The full OEM-vs-TPM matrix (spare parts, SLA tiers, language, sub-outsourcing, compliance docs, reporting) is the same for every Vertiv line — see the Vertiv battle card.

BAIT/MaRisk documentation package, DORA Art. 28 contract template, ISO 27001 and GDPR-compliant media handling apply identically to every Vertiv line — details on the Vertiv battle card.

Same four steps for every Vertiv line: inventory → fixed-price quote in 48 h → contract (BAIT/MaRisk/DORA hooks) → hand-over with spare-parts provisioning. Details on the Vertiv battle card.

Which Liebert NXC, APM and EXM models do you service?

Complete modular mid-range family: Liebert NXC (30kVA, 40kVA, 60kVA, 90kVA, 120kVA, 160kVA, 200kVA — mainstream modular), Liebert APM (30kW, 60kW, 90kW, 120kW, 150kW — compact modular with kW specification) and Liebert EXM / EXM2 (50kVA, 100kVA, 160kVA, 200kVA, 250kVA — enterprise modular). EXM2 is current 2nd generation with lithium-ion battery options, EXM 1st Generation is mid-lifecycle. Plus older pre-2014 NXC/APM predecessors on request. Including all power modules, battery modules (VRLA + lithium-ion on EXM2), intelligence modules, static switch modules, bypass modules, fans, LCD displays, backplane components, IntelliSlot Web Cards and IntelliSlot Unity Cards.

How does module swap during operation (hot-swap) work for NXC, APM and EXM?

All three classes have modular architecture with hot-swap capability, similar to APC Symmetra LX/PX and Eaton 9PXM, with Liebert-specific implementation each. Concrete logic: <strong>Power modules:</strong> with N+1 redundancy a single power module can be removed and swapped, UPS stays online via remaining modules. With N configuration (no redundancy buffer) bypass circuit active during swap. <strong>Battery modules:</strong> hot-swap-capable in all three classes — battery frames removed individually, UPS runs via other battery frames or in bypass mode with reduced autonomy. <strong>Intelligence modules:</strong> often N+1 redundant, hot-swap possible (UPS functionality stays active, only remote monitoring briefly interrupted). <strong>EXM2 specific:</strong> Lithium-ion battery cabinets in EXM2 have specific service procedures — lithium-ion battery cells not replaced individually like VRLA, but as complete cabinet modules. Our engineers specialized on both battery classes. Practically zero downtime in N+1 configurations, brief bypass phase in N configurations.

What does TPM cost for NXC, APM and EXM compared to Vertiv Service Plans?

30 to 55 percent savings on hardware maintenance component. <strong>NXC 60kVA</strong> with 24×7×4: TechCare roughly 50% below the Vertiv On-Site Service Plan. <strong>NXC 120kVA:</strong> roughly 50–55% below. <strong>NXC 200kVA:</strong> roughly 50–55% below. <strong>APM 60kW:</strong> roughly 50% below. <strong>APM 150kW:</strong> roughly 45–55% below. <strong>EXM 100kVA (1st Gen, mid-lifecycle):</strong> roughly 50–55% below. <strong>EXM2 200kVA (current gen):</strong> roughly 50–55% below. <strong>EXM2 250kVA lithium-ion:</strong> roughly 50–55% below. Module swap fixed price per module, transparently calculable — for NXC/APM power modules, EXM/EXM2 power modules and battery modules, each by class. For DACH customers with 5+ modular Liebert UPS, maintenance savings add up noticeably each year.

How do Liebert NXC, APM and EXM differ from each other?

Three clearly separated modular architectures for different use cases: <strong>Liebert NXC</strong> is mainstream modular class for mid-market datacenters — kVA specification (30-200kVA), classical modular design with hot-swap-capable power modules, ideal for standard mid-range workloads. <strong>Liebert APM</strong> is compact variant with kW specification (30-150kW) — smaller form factor, comparable to APC Symmetra PX kW classes, ideal for server rooms with limited footprint or mid-market configurations with clear kW power requirement. <strong>Liebert EXM/EXM2</strong> is enterprise class with extended power quality functions (50-250kVA) — higher efficiency, better frequency stability, EXM2 supports lithium-ion battery cabinets as option. From TPM perspective we service all three classes with same service standard, but respective refurbishing pools (NXC modules not 1-to-1 compatible with APM or EXM — different form factors and specifications). <strong>Competitive mapping:</strong> NXC ≈ APC Symmetra LX/PX kVA classes + Eaton 9PXM kVA. APM ≈ APC Symmetra PX kW classes + Eaton 9PXM kW. EXM/EXM2 ≈ APC Symmetra PX 100-250kVA enterprise + Eaton 9PXM enterprise configurations.

How does TPM work for Liebert EXM2 with lithium-ion battery cabinets?

EXM2 is first Liebert UPS class with native lithium-ion battery cabinet option (parallel to classical VRLA battery cabinets). Lithium-ion service has different logic than VRLA refresh: <strong>Lifecycle:</strong> lithium-ion battery cells have 8-12 years lifecycle (vs. 3-5 years VRLA), reduced refresh cycle. <strong>Service procedure:</strong> lithium-ion cells not replaced individually but as complete cabinet modules — swap logistics different from VRLA. <strong>Telemetry:</strong> lithium-ion battery cabinets have extended battery management system telemetry (BMS) with cell-level monitoring, state-of-charge, state-of-health, temperature monitoring. <strong>Disposal:</strong> lithium-ion battery disposal follows own logic (lithium-ion is BattG-applicable, but with different recycling procedures than VRLA). <strong>Cost comparison:</strong> lithium-ion cabinets more expensive in acquisition price than VRLA, but through longer lifecycle and smaller footprint often total cost of ownership cheaper. We service both battery classes under one contract — typical EXM2 configurations with mixed battery setups (VRLA + lithium-ion in same installation) feasible, with clear service logic per cabinet.

Which SLA levels do you recommend for NXC, APM and EXM?

Modular UPS logic analogous to APC Symmetra LX/PX and Eaton 9PXM: <strong>NXC/APM/EXM in productive mid-range datacenters</strong> with critical workloads as primary power: 24×7×4 with German-speaking onsite engineer standard. With N+1 module redundancy 5×9 NBD per system economical because module failure absorbed within system and hot-swap during operation possible. <strong>NXC/APM in N configuration without module redundancy</strong>: 24×7×4 mandatory because single module failure directly affects UPS functionality. <strong>EXM2 in Tier-2/Tier-3 datacenters</strong> as primary power: 24×7×4 with Liebert-certified onsite engineer due to extended power quality functions and lithium-ion battery specifics. <strong>EXM 1st Generation in mid-lifecycle fleet</strong>: 5×9 NBD sufficient, Parts Only for pure bridge configurations until refresh. <strong>NXC/APM in industrial and telecom special use</strong>: 24×7×4 due to special workload criticality. SLA staged per UPS unit individually by workload and redundancy configuration.