MPCB Cross-Reference: GV2, MS132, 3RV2 Replacement

14 Aug, 2026
Posted by: Muhammet KUL

What does "MPCB cross-reference" actually mean? It means matching a motor protection circuit breaker from one brand to an equivalent unit from another brand by current setting range, magnetic trip multiple, trip class, and coordination type — not by assuming catalogue numbers line up one-to-one. A Schneider TeSys GV2ME and an ABB MS132 sit in the same current tier and can protect the same motor, but terminal geometry, accessory ecosystem, and the tested coordination pairing differ between them. This article maps the three families procurement teams ask about most, Schneider TeSys GV2, ABB MS132, and Siemens SIRIUS 3RV2, by current tier, explains what to re-verify before substituting one for another, and flags the details a spec sheet skim tends to miss.

Why "Cross-Reference" Does Not Mean "Identical Part"

An MPCB engineering guide starts from the same premise every cross-reference request runs into: no two brands build the same device. Each catalogue number encodes a current setting range, a terminal type (screw or spring), auxiliary contact options, and a specific coordination-table entry with that brand's own contactor. Two units can share a current range and still fail on terminal compatibility or panel footprint.

Cross-reference is the process of identifying a functionally equivalent device from a different manufacturer by matching electrical ratings and protection class, then re-verifying every dependent parameter rather than assuming direct substitution (per IEC 60947-4-1 device classification).

Bimetal ranges overlap between brands but their midpoints rarely align. A motor drawing 18 A FLC might sit near the top of one manufacturer's 12–18 A dial range and near the middle of another's 12–20 A range. Both work. Neither is "the same part."

Match by Current Range and Frame Size First

Start the cross-reference by tier, not by part number. The three brands split their motor protection circuit breakers into roughly the same three current bands, even though the exact breakpoints differ.

Criteria	Schneider TeSys GV2	ABB MS132	Siemens SIRIUS 3RV2
Tier (approx. current range)	GV2ME / GV2P to 32 A	MS132 to 32 A (MS116 compact to 32 A)	Frame S00/S0, to roughly 40 A
Terminal options	Screw	Screw or spring	Screw or spring, ring or fork lug
Magnetic-only variant	GV2L	MO132	3RV2 magnetic-only versions
Trip class	Class 10	Class 10	Class 10
Contactor pairing	LC1 (TeSys)	AF contactors	3RT2 via link module
Higher-current step-up	GV3P to 65 A, GV4 to 115 A	MS165 to 65 A, MS450/490/496 to ~100 A	Frame S2/S3, to roughly 100 A

Above 32–40 A, the naming diverges but the tier logic holds: TeSys GV3P, ABB MS165, and Siemens 3RV2 frame S2 occupy the same middle band. TeSys GV4, ABB MS450/MS490/MS496, and 3RV2 frame S3 occupy the top band up to roughly 100–115 A. Pick the tier from the motor's FLC, then narrow inside it.

Then Check the Magnetic Trip Multiple

Current range gets a cross-reference into the right neighborhood. It does not confirm the replacement rides through the same inrush. Every MPCB in this comparison sets its magnetic (short-circuit) trip as a multiple of the thermal dial's current setting, not as a fixed amp value — so the instantaneous trip point moves when you re-dial the overload for a different FLC.

Formula: Magnetic Trip Point vs Thermal Setting — Source: IEC 60947-4-1

I_m ≈ 12–13 × I_set

Symbol	Description	Unit
I_m	Instantaneous magnetic trip current	A
I_set	Thermal dial setting (set to motor FLC)	A

Two units in the same tier can still land on different magnetic multiples at the edges of their range. If a motor's inrush runs at the high end of the usual 6–8x FLC band, confirm the cross-referenced unit's magnetic trip is not set low enough in the dial range to see that inrush as a fault. This is where a direct-on-line pump or fan swap usually passes without issue; a high-inertia load is where it is worth checking twice.

Key takeaway: Cross-reference by current tier first, then re-verify the magnetic trip multiple at the actual dial setting you will use — not at the frame's rated maximum.

Coordination Resets When the Brand Changes

Type 2 coordination is not a property of the MPCB alone. It is a tested result for a specific MPCB-plus-contactor pair, published by the manufacturer in a coordination table. Swap the MPCB brand and keep the old contactor, and you no longer have a documented Type 2 pairing — you have two devices that have never been tested together at that fault level.

Read the Type 1 vs Type 2 coordination distinction before finalizing a cross-referenced swap: Type 1 tolerates starter damage after a short circuit as long as no one is endangered; Type 2 requires the starter stay serviceable, with at most light, easily separated contact welding. If the cross-reference changes only the MPCB and the panel already has a fixed contactor brand, pull that manufacturer's coordination table for the new MPCB paired with the existing contactor before assuming the fault rating still holds.

Frame size is the physical housing category (e.g. S00, S0, S2, S3 in the Siemens system) that groups MPCBs by current range, terminal spacing, and mounting footprint; brands use different frame-naming conventions, but the underlying current bands track closely across manufacturers.

Terminal Type and the Accessory Ecosystem

A cross-reference that stops at current rating misses the part that actually holds up a panel build: mounting. Siemens 3RV2 attaches to a 3RT2 contactor through a link module that snaps the two together as one mechanical assembly. ABB's MS-series mounts directly to AF contactors with a coupling adapter. Schneider's GV2/GV3/GV4 mount to LC1 contactors through their own adapter kits. None of these mounting systems are interchangeable across brands — cross-referencing the breaker does not cross-reference the mounting hardware, and a panel builder who orders only the breaker discovers the gap at assembly, not at design.

Terminal type matters just as much on the field-wiring side. Screw terminals accept ring or fork lugs directly; spring terminals need bootlace ferrules on stranded conductors. If the incumbent panel standardized on spring terminals for faster wiring, a screw-only replacement is a real change to the build process, not a paperwork substitution.

Brand-to-Brand Equivalents by Current Tier

The same tier logic works from any starting brand. Below is the practical mapping in each direction, plus the one detail specific to that direction that a plain amperage comparison misses.

Schneider TeSys GV2 to ABB and Siemens

TeSys GV2ME (rotary dial) and GV2P (toggle) cover roughly 0.1–32 A in the thermal-magnetic build; GV2L is the magnetic-only version for pairing with a separate overload relay. In the ABB line, MS132 (or the more compact MS116) covers the same tier, with MO132 as the magnetic-only counterpart. In the Siemens line, 3RV2 frame S00/S0 covers the same band, with magnetic-only 3RV2 variants available. All three publish Class 10 as standard and support phase-loss-sensitive tripping on their thermal-magnetic models — check each brand's own datasheet for the exact phase-loss threshold, since the base fact ("faster than plain bimetal on single-phasing") is shared but the number is brand-specific.

ABB MS132 to Schneider and Siemens

Going the other direction, an ABB MS132 spec on a bill of materials points to TeSys GV2ME/GV2P on the Schneider side and 3RV2 frame S00/S0 on the Siemens side, using the same current-tier logic. Where the ABB BOM calls out screw terminals, match to the screw-terminal option on GV2 or 3RV2 rather than the spring version, since the incumbent panel's crimped lugs will not fit a spring cage without rework. Where the ABB BOM is MO132 magnetic-only, cross-reference to GV2L or a magnetic-only 3RV2 — and confirm the separate overload relay it pairs with has an equivalent on the target brand's side; see magnetic-only MPCB with a separate overload relay for how that combination is sized.

Siemens SIRIUS 3RV2 to Schneider and ABB

3RV2 frame S00/S0 (roughly 0.1–40 A) cross-references to TeSys GV2 and ABB MS132/MS116 on current range. Frame S2 steps up to TeSys GV3P and ABB MS165; frame S3 steps up to TeSys GV4 and ABB MS450/MS490/MS496. The link-module mounting is the detail that trips people up here: a 3RV2-to-3RT2 link module has no equivalent part in the Schneider or ABB catalogues, because neither brand mounts its MPCB to its contactor the same way. Budget for the target brand's own coupling hardware as a separate line item, not as a like-for-like accessory swap.

Key takeaway: A brand-to-brand MPCB cross-reference is at minimum three checks — current tier, magnetic trip multiple at the actual dial setting, and mounting/coordination compatibility with whatever contactor is already in the panel.

Common Cross-Reference Mistakes We See in RFQs

What we see in the field: most cross-reference requests that come back wrong assumed the current rating was the whole spec. A buyer quotes an MS132-25 replacement for a GV2ME16 because both cover 25 A somewhere in their range, without checking that the GV2ME16's actual dial setting for the motor in question was 14 A — near the bottom of the MS132-25's range and closer to the middle of a smaller-frame MS132-16. The current tier matched; the actual operating point did not.

The second common miss is coordination. A panel with a documented Type 2 pairing gets a mid-life MPCB swap for stock-availability reasons, and the new MPCB-contactor combination is never checked against the new manufacturer's coordination table. It usually works. "Usually" is not a documented Type 2 rating, and an insurer or end customer asking for coordination proof after an incident will not accept "it's the same amperage" as an answer.

Key takeaway: Match the dial setting the motor actually needs, not the top of the frame's current range, before treating two brands' MPCBs as interchangeable.

Frequently Asked Questions

Can I cross-reference an MPCB by current rating alone?

Current rating narrows the search to the right tier, but it does not confirm the magnetic trip multiple, terminal type, or coordination pairing. Treat it as the first filter, not the final answer.

Is a Schneider TeSys GV2 the same as an ABB MS132?

They occupy the same current tier (roughly to 32 A) and both offer thermal-magnetic protection with Class 10 tripping, but they use different terminal systems, different contactor-mounting hardware, and separate manufacturer coordination tables. They are functional equivalents in the same class, not identical parts.

Do I need to re-check coordination when I cross-reference an MPCB?

Yes, if the contactor stays the same brand and the MPCB changes brand. Type 2 coordination is a tested pairing published by each manufacturer for its own MPCB-and-contactor combination, so a new brand on one side of the pair is not automatically covered by the old rating.

What happens if I use the wrong frame size when cross-referencing?

An undersized frame will not accept the required current setting or will trip at the top of its dial range under normal load. An oversized frame usually fits electrically but wastes panel space and can push a motor's overload protection outside an accurate setting window for smaller FLC values.

Can I mix an ABB MPCB with a Siemens contactor?

Mechanically, no — each brand's MPCB mounts to its own contactor through brand-specific coupling hardware or a link module, so mixing brands means separate mounting (DIN rail with wiring) rather than a direct-coupled assembly, and there will be no manufacturer coordination table covering the mixed pair.

Conclusion

Cross-referencing an MPCB across Schneider, ABB, and Siemens starts with current tier, but the tier is only the entry point. Confirm the magnetic trip multiple at the actual dial setting, check whether the coordination pairing with the existing contactor still holds, and price the mounting hardware separately if the contactor brand is changing too. Get those three right and a brand swap is a routine substitution; skip them and "same amperage" becomes a field problem months later. For selection and setting mechanics once you've picked the tier, see how to select and set an MPCB, and for the full assembly logic see building an MPCB and contactor motor starter. Stoklink stocks MPCBs and manual motor starters across all three tiers, plus the thermal overload relays that pair with magnetic-only variants.